25731325 has 24 divisors (see below), whose sum is σ = 33212160. Its totient is φ = 19761600.

The previous prime is 25731311. The next prime is 25731359. The reversal of 25731325 is 52313752.

It is not a de Polignac number, because 25731325 - 2⁷ = 25731197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25731293 and 25731302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71496 + ... + 71854.

It is an arithmetic number, because the mean of its divisors is an integer number (1383840).

Almost surely, 2^25731325 is an apocalyptic number.

25731325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25731325 is a deficient number, since it is larger than the sum of its proper divisors (7480835).

25731325 is a wasteful number, since it uses less digits than its factorization.

25731325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 472 counting only the distinct ones).

The product of its digits is 6300, while the sum is 28.

The square root of 25731325 is about 5072.6053463679. The cubic root of 25731325 is about 295.2256245765.

The spelling of 25731325 in words is "twenty-five million, seven hundred thirty-one thousand, three hundred twenty-five".