25379038864 has 15 divisors (see below), whose sum is σ = 49173122467. Its totient is φ = 12689200816.

The previous prime is 25379038849. The next prime is 25379038877. The reversal of 25379038864 is 46883097352.

The square root of 25379038864 is 159308.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×25379038864² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 617319 + ... + 657145.

Almost surely, 2^25379038864 is an apocalyptic number.

25379038864 is the 159308-th square number.

It is an amenable number.

25379038864 is a deficient number, since it is larger than the sum of its proper divisors (23794083603).

25379038864 is an frugal number, since it uses more digits than its factorization.

25379038864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79662 (or 39829 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 25379038864 in words is "twenty-five billion, three hundred seventy-nine million, thirty-eight thousand, eight hundred sixty-four".