25314457964 has 24 divisors (see below), whose sum is σ = 45548333376. Its totient is φ = 12302928000.

The previous prime is 25314457963. The next prime is 25314457991. The reversal of 25314457964 is 46975441352.

It is a super-2 number, since 2×25314457964² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25314457963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240347 + ... + 329234.

It is an arithmetic number, because the mean of its divisors is an integer number (1897847224).

Almost surely, 2^25314457964 is an apocalyptic number.

It is an amenable number.

25314457964 is a deficient number, since it is larger than the sum of its proper divisors (20233875412).

25314457964 is a wasteful number, since it uses less digits than its factorization.

25314457964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569897 (or 569895 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The spelling of 25314457964 in words is "twenty-five billion, three hundred fourteen million, four hundred fifty-seven thousand, nine hundred sixty-four".