25516460 has 12 divisors (see below), whose sum is σ = 53584608. Its totient is φ = 10206576.

The previous prime is 25516429. The next prime is 25516471. The reversal of 25516460 is 6461552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637892 + ... + 637931.

It is an arithmetic number, because the mean of its divisors is an integer number (4465384).

Almost surely, 2^25516460 is an apocalyptic number.

25516460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25516460 is an abundant number, since it is smaller than the sum of its proper divisors (28068148).

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

25516460 is a wasteful number, since it uses less digits than its factorization.

25516460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275832 (or 1275830 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 25516460 is about 5051.3819891194. The cubic root of 25516460 is about 294.4015830442.

The spelling of 25516460 in words is "twenty-five million, five hundred sixteen thousand, four hundred sixty".