25264218 has 32 divisors (see below), whose sum is σ = 57972096. Its totient is φ = 7190208.

The previous prime is 25264207. The next prime is 25264219. The reversal of 25264218 is 81246252.

It is a super-2 number, since 2×25264218² = 1276561422303048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25264219) 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, 11280 + ... + 13332.

It is an arithmetic number, because the mean of its divisors is an integer number (1811628).

Almost surely, 2^25264218 is an apocalyptic number.

25264218 is an abundant number, since it is smaller than the sum of its proper divisors (32707878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25264218 is a wasteful number, since it uses less digits than its factorization.

25264218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358.

The product of its digits is 7680, while the sum is 30.

The square root of 25264218 is about 5026.3523553368. The cubic root of 25264218 is about 293.4282701773.

The spelling of 25264218 in words is "twenty-five million, two hundred sixty-four thousand, two hundred eighteen".