25472664 has 128 divisors (see below), whose sum is σ = 85708800. Its totient is φ = 6842880.

The previous prime is 25472653. The next prime is 25472717. The reversal of 25472664 is 46627452.

It is a super-2 number, since 2×25472664² = 1297713222513792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 25209 + ... + 26199.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^25472664 is an apocalyptic number.

25472664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25472664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42854400).

25472664 is an abundant number, since it is smaller than the sum of its proper divisors (60236136).

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

25472664 is a wasteful number, since it uses less digits than its factorization.

25472664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1020 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 25472664 is about 5047.0450760816. The cubic root of 25472664 is about 294.2330513649.

The spelling of 25472664 in words is "twenty-five million, four hundred seventy-two thousand, six hundred sixty-four".