25720683982 has 12 divisors (see below), whose sum is σ = 44879969160. Its totient is φ = 11023150236.

The previous prime is 25720683979. The next prime is 25720684019. The reversal of 25720683982 is 28938602752.

It is a super-2 number, since 2×25720683982² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 131227882 + ... + 131228077.

It is an arithmetic number, because the mean of its divisors is an integer number (3739997430).

Almost surely, 2^25720683982 is an apocalyptic number.

25720683982 is a deficient number, since it is larger than the sum of its proper divisors (19159285178).

25720683982 is a wasteful number, since it uses less digits than its factorization.

25720683982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262455975 (or 262455968 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 25720683982 in words is "twenty-five billion, seven hundred twenty million, six hundred eighty-three thousand, nine hundred eighty-two".