25572831 has 16 divisors (see below), whose sum is σ = 35169024. Its totient is φ = 16519104.

The previous prime is 25572823. The next prime is 25572839. The reversal of 25572831 is 13827552.

It is an interprime number because it is at equal distance from previous prime (25572823) and next prime (25572839).

It is not a de Polignac number, because 25572831 - 2³ = 25572823 is a prime.

It is a super-2 number, since 2×25572831² = 1307939370709122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25572792 and 25572801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25572839) 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, 16950 + ... + 18396.

It is an arithmetic number, because the mean of its divisors is an integer number (2198064).

Almost surely, 2^25572831 is an apocalyptic number.

25572831 is a deficient number, since it is larger than the sum of its proper divisors (9596193).

25572831 is a wasteful number, since it uses less digits than its factorization.

25572831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630.

The product of its digits is 16800, while the sum is 33.

The square root of 25572831 is about 5056.9586709800. The cubic root of 25572831 is about 294.6182210565.

The spelling of 25572831 in words is "twenty-five million, five hundred seventy-two thousand, eight hundred thirty-one".