25479864 has 48 divisors (see below), whose sum is σ = 71393400. Its totient is φ = 8199744.

The previous prime is 25479859. The next prime is 25479869. The reversal of 25479864 is 46897452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25479859) and next prime (25479869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25479869) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4014 + ... + 8189.

Almost surely, 2^25479864 is an apocalyptic number.

25479864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25479864 is an abundant number, since it is smaller than the sum of its proper divisors (45913536).

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

25479864 is a wasteful number, since it uses less digits than its factorization.

25479864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12244 (or 12237 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 25479864 is about 5047.7583143411. The cubic root of 25479864 is about 294.2607709941.

The spelling of 25479864 in words is "twenty-five million, four hundred seventy-nine thousand, eight hundred sixty-four".