25971382616 has 16 divisors (see below), whose sum is σ = 50267192640. Its totient is φ = 12566797920.

The previous prime is 25971382603. The next prime is 25971382621. The reversal of 25971382616 is 61628317952.

It is a happy number.

It is a congruent number.

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, 52361411 + ... + 52361906.

It is an arithmetic number, because the mean of its divisors is an integer number (3141699540).

Almost surely, 2^25971382616 is an apocalyptic number.

It is an amenable number.

25971382616 is a deficient number, since it is larger than the sum of its proper divisors (24295810024).

25971382616 is a wasteful number, since it uses less digits than its factorization.

25971382616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104723354 (or 104723350 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The spelling of 25971382616 in words is "twenty-five billion, nine hundred seventy-one million, three hundred eighty-two thousand, six hundred sixteen".