25372557 has 12 divisors (see below), whose sum is σ = 41884960. Its totient is φ = 14498568.

The previous prime is 25372553. The next prime is 25372559. The reversal of 25372557 is 75527352.

It is a happy number.

It is not a de Polignac number, because 25372557 - 2² = 25372553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25372553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201307 + ... + 201432.

Almost surely, 2^25372557 is an apocalyptic number.

It is an amenable number.

25372557 is a deficient number, since it is larger than the sum of its proper divisors (16512403).

25372557 is a wasteful number, since it uses less digits than its factorization.

25372557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402752 (or 402749 counting only the distinct ones).

The product of its digits is 73500, while the sum is 36.

The square root of 25372557 is about 5037.1179259573. The cubic root of 25372557 is about 293.8471022275.

The spelling of 25372557 in words is "twenty-five million, three hundred seventy-two thousand, five hundred fifty-seven".