25311311464 has 32 divisors (see below), whose sum is σ = 48102088320. Its totient is φ = 12485025216.

The previous prime is 25311311449. The next prime is 25311311471. The reversal of 25311311464 is 46411311352.

It is a super-3 number, since 3×25311311464³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158314 + ... + 275110.

It is an arithmetic number, because the mean of its divisors is an integer number (1503190260).

Almost surely, 2^25311311464 is an apocalyptic number.

It is an amenable number.

25311311464 is a deficient number, since it is larger than the sum of its proper divisors (22790776856).

25311311464 is a wasteful number, since it uses less digits than its factorization.

25311311464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117169 (or 117165 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The spelling of 25311311464 in words is "twenty-five billion, three hundred eleven million, three hundred eleven thousand, four hundred sixty-four".