25265331 has 72 divisors (see below), whose sum is σ = 47565360. Its totient is φ = 13208832.

The previous prime is 25265323. The next prime is 25265347. The reversal of 25265331 is 13356252.

25265331 is a `hidden beast` number, since 2 + 5 + 2 + 653 + 3 + 1 = 666.

It is not a de Polignac number, because 25265331 - 2³ = 25265323 is a prime.

It is a super-2 number, since 2×25265331² = 1276673901079122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25265295 and 25265304.

It is not an unprimeable number, because it can be changed into a prime (25265311) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 223531 + ... + 223643.

It is an arithmetic number, because the mean of its divisors is an integer number (660630).

Almost surely, 2^25265331 is an apocalyptic number.

25265331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25265331 is a deficient number, since it is larger than the sum of its proper divisors (22300029).

25265331 is a wasteful number, since it uses less digits than its factorization.

25265331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 136 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 25265331 is about 5026.4630705895. The cubic root of 25265331 is about 293.4325790497.

It can be divided in two parts, 25 and 265331, that added together give a triangular number (265356 = T₇₂₈).

The spelling of 25265331 in words is "twenty-five million, two hundred sixty-five thousand, three hundred thirty-one".