25470831 has 16 divisors (see below), whose sum is σ = 34801920. Its totient is φ = 16564800.

The previous prime is 25470827. The next prime is 25470833. The reversal of 25470831 is 13807452.

It is not a de Polignac number, because 25470831 - 2² = 25470827 is a prime.

It is a super-2 number, since 2×25470831² = 1297526463661122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25470833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26251 + ... + 27203.

It is an arithmetic number, because the mean of its divisors is an integer number (2175120).

Almost surely, 2^25470831 is an apocalyptic number.

25470831 is a deficient number, since it is larger than the sum of its proper divisors (9331089).

25470831 is a wasteful number, since it uses less digits than its factorization.

25470831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 25470831 is about 5046.8634814110. The cubic root of 25470831 is about 294.2259935752.

The spelling of 25470831 in words is "twenty-five million, four hundred seventy thousand, eight hundred thirty-one".