25870916 has 18 divisors (see below), whose sum is σ = 45747198. Its totient is φ = 12801600.

The previous prime is 25870891. The next prime is 25870937. The reversal of 25870916 is 61907852.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 64516 = 5080^2 + 254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25870916.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64316 + ... + 64716.

It is an arithmetic number, because the mean of its divisors is an integer number (2541511).

Almost surely, 2^25870916 is an apocalyptic number.

It is an amenable number.

25870916 is a deficient number, since it is larger than the sum of its proper divisors (19876282).

25870916 is a wasteful number, since it uses less digits than its factorization.

25870916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 25870916 is about 5086.3460362032. The cubic root of 25870916 is about 295.7585229249.

The spelling of 25870916 in words is "twenty-five million, eight hundred seventy thousand, nine hundred sixteen".