25380691916 has 24 divisors (see below), whose sum is σ = 44646792960. Its totient is φ = 12624599952.

The previous prime is 25380691901. The next prime is 25380691949. The reversal of 25380691916 is 61919608352.

It is a happy number.

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, 761105 + ... + 793751.

It is an arithmetic number, because the mean of its divisors is an integer number (1860283040).

Almost surely, 2^25380691916 is an apocalyptic number.

It is an amenable number.

25380691916 is a deficient number, since it is larger than the sum of its proper divisors (19266101044).

25380691916 is a wasteful number, since it uses less digits than its factorization.

25380691916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33653 (or 33651 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 25380691916 in words is "twenty-five billion, three hundred eighty million, six hundred ninety-one thousand, nine hundred sixteen".