25985725 has 6 divisors (see below), whose sum is σ = 32222330. Its totient is φ = 20788560.

The previous prime is 25985693. The next prime is 25985747. The reversal of 25985725 is 52758952.

It can be written as a sum of positive squares in 3 ways, for example, as 3003289 + 22982436 = 1733^2 + 4794^2 .

It is not a de Polignac number, because 25985725 - 2⁵ = 25985693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 519690 + ... + 519739.

Almost surely, 2^25985725 is an apocalyptic number.

25985725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25985725 is a deficient number, since it is larger than the sum of its proper divisors (6236605).

25985725 is a wasteful number, since it uses less digits than its factorization.

25985725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039439 (or 1039434 counting only the distinct ones).

The product of its digits is 252000, while the sum is 43.

The square root of 25985725 is about 5097.6195424924. The cubic root of 25985725 is about 296.1953794391.

The spelling of 25985725 in words is "twenty-five million, nine hundred eighty-five thousand, seven hundred twenty-five".