25250931 has 6 divisors (see below), whose sum is σ = 36473580. Its totient is φ = 16833948.

The previous prime is 25250923. The next prime is 25250947. The reversal of 25250931 is 13905252.

It is not a de Polignac number, because 25250931 - 2³ = 25250923 is a prime.

It is a super-2 number, since 2×25250931² = 1275219032733522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25250895 and 25250904.

It is not an unprimeable number, because it can be changed into a prime (25250971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1402821 + ... + 1402838.

It is an arithmetic number, because the mean of its divisors is an integer number (6078930).

Almost surely, 2^25250931 is an apocalyptic number.

25250931 is a deficient number, since it is larger than the sum of its proper divisors (11222649).

25250931 is a wasteful number, since it uses less digits than its factorization.

25250931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805665 (or 2805662 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 25250931 is about 5025.0304476689. The cubic root of 25250931 is about 293.3768210605.

The spelling of 25250931 in words is "twenty-five million, two hundred fifty thousand, nine hundred thirty-one".