25075257 has 4 divisors (see below), whose sum is σ = 33433680. Its totient is φ = 16716836.

The previous prime is 25075229. The next prime is 25075319. The reversal of 25075257 is 75257052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25075257 - 2¹² = 25071161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25075207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4179207 + ... + 4179212.

It is an arithmetic number, because the mean of its divisors is an integer number (8358420).

Almost surely, 2^25075257 is an apocalyptic number.

It is an amenable number.

25075257 is a deficient number, since it is larger than the sum of its proper divisors (8358423).

25075257 is an equidigital number, since it uses as much as digits as its factorization.

25075257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8358422.

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 25075257 is about 5007.5200448925. The cubic root of 25075257 is about 292.6948836408.

The spelling of 25075257 in words is "twenty-five million, seventy-five thousand, two hundred fifty-seven".