25297512 has 64 divisors (see below), whose sum is σ = 68904000. Its totient is φ = 7709184.

The previous prime is 25297507. The next prime is 25297619. The reversal of 25297512 is 21579252.

It is a happy number.

It is a super-2 number, since 2×25297512² = 1279928226780288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12268 + ... + 14180.

It is an arithmetic number, because the mean of its divisors is an integer number (1076625).

Almost surely, 2^25297512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25297512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34452000).

25297512 is an abundant number, since it is smaller than the sum of its proper divisors (43606488).

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

25297512 is a wasteful number, since it uses less digits than its factorization.

25297512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1966 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 25297512 is about 5029.6632094008. The cubic root of 25297512 is about 293.5571100051.

The spelling of 25297512 in words is "twenty-five million, two hundred ninety-seven thousand, five hundred twelve".