25294257 has 12 divisors (see below), whose sum is σ = 36668944. Its totient is φ = 16801560.

The previous prime is 25294231. The next prime is 25294267. The reversal of 25294257 is 75249252.

It is a happy number.

It is not a de Polignac number, because 25294257 - 2⁶ = 25294193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25294267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2419 + ... + 7512.

Almost surely, 2^25294257 is an apocalyptic number.

It is an amenable number.

25294257 is a deficient number, since it is larger than the sum of its proper divisors (11374687).

25294257 is a wasteful number, since it uses less digits than its factorization.

25294257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10220 (or 10217 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 25294257 is about 5029.3396186776. The cubic root of 25294257 is about 293.5445189200.

It can be divided in two parts, 2529 and 4257, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 25294257 in words is "twenty-five million, two hundred ninety-four thousand, two hundred fifty-seven".