25557272 has 32 divisors (see below), whose sum is σ = 51819600. Its totient is φ = 11746944.

The previous prime is 25557251. The next prime is 25557293. The reversal of 25557272 is 27275552.

It is an interprime number because it is at equal distance from previous prime (25557251) and next prime (25557293).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40979 + ... + 41597.

Almost surely, 2^25557272 is an apocalyptic number.

It is an amenable number.

25557272 is an abundant number, since it is smaller than the sum of its proper divisors (26262328).

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

25557272 is a wasteful number, since it uses less digits than its factorization.

25557272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1031 counting only the distinct ones).

The product of its digits is 49000, while the sum is 35.

The square root of 25557272 is about 5055.4200616764. The cubic root of 25557272 is about 294.5584584791.

The spelling of 25557272 in words is "twenty-five million, five hundred fifty-seven thousand, two hundred seventy-two".