25292985 has 32 divisors (see below), whose sum is σ = 42577920. Its totient is φ = 12796608.

The previous prime is 25292983. The next prime is 25293001. The reversal of 25292985 is 58929252.

It is not a de Polignac number, because 25292985 - 2¹ = 25292983 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25292983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57396 + ... + 57834.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^25292985 is an apocalyptic number.

It is an amenable number.

25292985 is a deficient number, since it is larger than the sum of its proper divisors (17284935).

25292985 is a wasteful number, since it uses less digits than its factorization.

25292985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637.

The product of its digits is 129600, while the sum is 42.

The square root of 25292985 is about 5029.2131591333. The cubic root of 25292985 is about 293.5395982393.

The spelling of 25292985 in words is "twenty-five million, two hundred ninety-two thousand, nine hundred eighty-five".