1025451252 has 144 divisors (see below), whose sum is σ = 3178680960. Its totient is φ = 282828672.

The previous prime is 1025451239. The next prime is 1025451253. The reversal of 1025451252 is 2521545201.

1025451252 is a `hidden beast` number, since 102 + 545 + 12 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025451253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194718 + ... + 199914.

Almost surely, 2^1025451252 is an apocalyptic number.

1025451252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025451252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589340480).

1025451252 is an abundant number, since it is smaller than the sum of its proper divisors (2153229708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025451252 is a wasteful number, since it uses less digits than its factorization.

1025451252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252 (or 5238 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1025451252 is about 32022.6677839308. The cubic root of 1025451252 is about 1008.4127773726.

Adding to 1025451252 its reverse (2521545201), we get a palindrome (3546996453).

The spelling of 1025451252 in words is "one billion, twenty-five million, four hundred fifty-one thousand, two hundred fifty-two".