25229340 has 96 divisors (see below), whose sum is σ = 82656000. Its totient is φ = 6371136.

The previous prime is 25229291. The next prime is 25229341. The reversal of 25229340 is 4392252.

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25229341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9031 + ... + 11489.

It is an arithmetic number, because the mean of its divisors is an integer number (861000).

Almost surely, 2^25229340 is an apocalyptic number.

25229340 is a gapful number since it is divisible by the number (20) 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 25229340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41328000).

25229340 is an abundant number, since it is smaller than the sum of its proper divisors (57426660).

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

25229340 is a wasteful number, since it uses less digits than its factorization.

25229340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496 (or 2488 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 25229340 is about 5022.8816430412. The cubic root of 25229340 is about 293.2931791914.

It can be divided in two parts, 252 and 29340, that added together give a palindrome (29592).

The spelling of 25229340 in words is "twenty-five million, two hundred twenty-nine thousand, three hundred forty".