25415560 has 16 divisors (see below), whose sum is σ = 57185100. Its totient is φ = 10166208.

The previous prime is 25415549. The next prime is 25415569. The reversal of 25415560 is 6551452.

It can be written as a sum of positive squares in 2 ways, for example, as 23872996 + 1542564 = 4886^2 + 1242^2 .

It is a super-2 number, since 2×25415560² = 1291901380227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25415569) 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, 317655 + ... + 317734.

Almost surely, 2^25415560 is an apocalyptic number.

25415560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25415560 is an abundant number, since it is smaller than the sum of its proper divisors (31769540).

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

25415560 is a wasteful number, since it uses less digits than its factorization.

25415560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635400 (or 635396 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 25415560 is about 5041.3847304089. The cubic root of 25415560 is about 294.0130186902.

The spelling of 25415560 in words is "twenty-five million, four hundred fifteen thousand, five hundred sixty".