25961625 has 48 divisors (see below), whose sum is σ = 47893248. Its totient is φ = 13524000.

The previous prime is 25961599. The next prime is 25961633. The reversal of 25961625 is 52616952.

25961625 is a `hidden beast` number, since 2 + 596 + 1 + 62 + 5 = 666.

It is not a de Polignac number, because 25961625 - 2⁷ = 25961497 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25961625.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52630 + ... + 53120.

It is an arithmetic number, because the mean of its divisors is an integer number (997776).

Almost surely, 2^25961625 is an apocalyptic number.

25961625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25961625 is a deficient number, since it is larger than the sum of its proper divisors (21931623).

25961625 is a wasteful number, since it uses less digits than its factorization.

25961625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 546 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 25961625 is about 5095.2551457214. The cubic root of 25961625 is about 296.1037840658.

The spelling of 25961625 in words is "twenty-five million, nine hundred sixty-one thousand, six hundred twenty-five".