25493797386 has 16 divisors (see below), whose sum is σ = 56652883200. Its totient is φ = 8497932444.

The previous prime is 25493797331. The next prime is 25493797393. The reversal of 25493797386 is 68379739452.

25493797386 is a `hidden beast` number, since 2 + 5 + 493 + 79 + 73 + 8 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236053626 + ... + 236053733.

It is an arithmetic number, because the mean of its divisors is an integer number (3540805200).

Almost surely, 2^25493797386 is an apocalyptic number.

25493797386 is an abundant number, since it is smaller than the sum of its proper divisors (31159085814).

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

25493797386 is a wasteful number, since it uses less digits than its factorization.

25493797386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472107370 (or 472107364 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 25493797386 in words is "twenty-five billion, four hundred ninety-three million, seven hundred ninety-seven thousand, three hundred eighty-six".