20125854 has 64 divisors (see below), whose sum is σ = 52531200. Its totient is φ = 5590944.

The previous prime is 20125843. The next prime is 20125867. The reversal of 20125854 is 45852102.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13267 + ... + 14705.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^20125854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20125854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26265600).

20125854 is an abundant number, since it is smaller than the sum of its proper divisors (32405346).

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

20125854 is a wasteful number, since it uses less digits than its factorization.

20125854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 20125854 is about 4486.1847933406. The cubic root of 20125854 is about 272.0099387228.

Adding to 20125854 its reverse (45852102), we get a palindrome (65977956).

The spelling of 20125854 in words is "twenty million, one hundred twenty-five thousand, eight hundred fifty-four".