25680516 has 24 divisors (see below), whose sum is σ = 61541760. Its totient is φ = 8328672.

The previous prime is 25680481. The next prime is 25680521. The reversal of 25680516 is 61508652.

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, 28476 + ... + 29363.

It is an arithmetic number, because the mean of its divisors is an integer number (2564240).

Almost surely, 2^25680516 is an apocalyptic number.

It is an amenable number.

25680516 is an abundant number, since it is smaller than the sum of its proper divisors (35861244).

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

25680516 is a wasteful number, since it uses less digits than its factorization.

25680516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57883 (or 57881 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 25680516 is about 5067.5946957112. The cubic root of 25680516 is about 295.0311793148.

The spelling of 25680516 in words is "twenty-five million, six hundred eighty thousand, five hundred sixteen".