25725925 has 6 divisors (see below), whose sum is σ = 31900178. Its totient is φ = 20580720.

The previous prime is 25725907. The next prime is 25725961. The reversal of 25725925 is 52952752.

It can be written as a sum of positive squares in 3 ways, for example, as 8561476 + 17164449 = 2926^2 + 4143^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25725925 is a prime.

It is a super-3 number, since 3×25725925³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

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, 514494 + ... + 514543.

Almost surely, 2^25725925 is an apocalyptic number.

25725925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25725925 is a deficient number, since it is larger than the sum of its proper divisors (6174253).

25725925 is a wasteful number, since it uses less digits than its factorization.

25725925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029047 (or 1029042 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 25725925 is about 5072.0730475812. The cubic root of 25725925 is about 295.2049710228.

The spelling of 25725925 in words is "twenty-five million, seven hundred twenty-five thousand, nine hundred twenty-five".