25704395516 has 12 divisors (see below), whose sum is σ = 46079831280. Its totient is φ = 12538729440.

The previous prime is 25704395491. The next prime is 25704395527. The reversal of 25704395516 is 61559340752.

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, 78366896 + ... + 78367223.

It is an arithmetic number, because the mean of its divisors is an integer number (3839985940).

Almost surely, 2^25704395516 is an apocalyptic number.

It is an amenable number.

25704395516 is a deficient number, since it is larger than the sum of its proper divisors (20375435764).

25704395516 is a wasteful number, since it uses less digits than its factorization.

25704395516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156734164 (or 156734162 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 25704395516 in words is "twenty-five billion, seven hundred four million, three hundred ninety-five thousand, five hundred sixteen".