25525690 has 24 divisors (see below), whose sum is σ = 46648980. Its totient is φ = 10056384.

The previous prime is 25525681. The next prime is 25525693. The reversal of 25525690 is 9652552.

It can be written as a sum of positive squares in 2 ways, for example, as 24770529 + 755161 = 4977^2 + 869^2 .

It is a super-2 number, since 2×25525690² = 1303121699952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25525693) 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, 62206 + ... + 62614.

Almost surely, 2^25525690 is an apocalyptic number.

25525690 is a deficient number, since it is larger than the sum of its proper divisors (21123290).

25525690 is an equidigital number, since it uses as much as digits as its factorization.

25525690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 25525690 is about 5052.2955178810. The cubic root of 25525690 is about 294.4370764608.

The spelling of 25525690 in words is "twenty-five million, five hundred twenty-five thousand, six hundred ninety".