25314257 has 4 divisors (see below), whose sum is σ = 25341936. Its totient is φ = 25286580.

The previous prime is 25314161. The next prime is 25314271. The reversal of 25314257 is 75241352.

It is a happy number.

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 25314257 - 2¹⁶ = 25248721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25314277) 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, 12419 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (6335484).

Almost surely, 2^25314257 is an apocalyptic number.

It is an amenable number.

25314257 is a deficient number, since it is larger than the sum of its proper divisors (27679).

25314257 is an equidigital number, since it uses as much as digits as its factorization.

25314257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27678.

The product of its digits is 8400, while the sum is 29.

The square root of 25314257 is about 5031.3275584084. The cubic root of 25314257 is about 293.6218664341.

The spelling of 25314257 in words is "twenty-five million, three hundred fourteen thousand, two hundred fifty-seven".