25623280 has 20 divisors (see below), whose sum is σ = 59574312. Its totient is φ = 10249280.

The previous prime is 25623271. The next prime is 25623281. The reversal of 25623280 is 8232652.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25623281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160066 + ... + 160225.

Almost surely, 2^25623280 is an apocalyptic number.

25623280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25623280 is an abundant number, since it is smaller than the sum of its proper divisors (33951032).

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

25623280 is a wasteful number, since it uses less digits than its factorization.

25623280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320304 (or 320298 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 25623280 is about 5061.9442904876. The cubic root of 25623280 is about 294.8118305882.

The spelling of 25623280 in words is "twenty-five million, six hundred twenty-three thousand, two hundred eighty".