25313970064 has 20 divisors (see below), whose sum is σ = 50242057740. Its totient is φ = 12348277760.

The previous prime is 25313970043. The next prime is 25313970091. The reversal of 25313970064 is 46007931352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13234201600 + 12079768464 = 115040^2 + 109908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25313969999 and 25313970026.

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, 19293529 + ... + 19294840.

It is an arithmetic number, because the mean of its divisors is an integer number (2512102887).

Almost surely, 2^25313970064 is an apocalyptic number.

It is an amenable number.

25313970064 is a deficient number, since it is larger than the sum of its proper divisors (24928087676).

25313970064 is a wasteful number, since it uses less digits than its factorization.

25313970064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38588418 (or 38588412 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 25313970064 in words is "twenty-five billion, three hundred thirteen million, nine hundred seventy thousand, sixty-four".