25317617344 has 42 divisors (see below), whose sum is σ = 53023055244. Its totient is φ = 11992544640.

The previous prime is 25317617341. The next prime is 25317617393. The reversal of 25317617344 is 44371671352.

It is a super-2 number, since 2×25317617344² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25317617344.

It is not an unprimeable number, because it can be changed into a prime (25317617341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 524802 + ... + 571009.

Almost surely, 2^25317617344 is an apocalyptic number.

It is an amenable number.

25317617344 is an abundant number, since it is smaller than the sum of its proper divisors (27705437900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25317617344 is a wasteful number, since it uses less digits than its factorization.

25317617344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095861 (or 1095832 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The spelling of 25317617344 in words is "twenty-five billion, three hundred seventeen million, six hundred seventeen thousand, three hundred forty-four".