25779264 has 56 divisors (see below), whose sum is σ = 77955648. Its totient is φ = 7365120.

The previous prime is 25779233. The next prime is 25779307. The reversal of 25779264 is 46297752.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8247 + ... + 10934.

Almost surely, 2^25779264 is an apocalyptic number.

25779264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25779264 is an abundant number, since it is smaller than the sum of its proper divisors (52176384).

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

25779264 is a wasteful number, since it uses less digits than its factorization.

25779264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19203 (or 19193 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 25779264 is about 5077.3284313702. The cubic root of 25779264 is about 295.4088518441.

The spelling of 25779264 in words is "twenty-five million, seven hundred seventy-nine thousand, two hundred sixty-four".