25716059317 has 4 divisors (see below), whose sum is σ = 27694217740. Its totient is φ = 23737900896.

The previous prime is 25716059309. The next prime is 25716059329. The reversal of 25716059317 is 71395061752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1571250321 + 24144808996 = 39639^2 + 155386^2 .

It is a cyclic number.

It is not a de Polignac number, because 25716059317 - 2³ = 25716059309 is a prime.

It is a super-2 number, since 2×25716059317² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25716009317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989079192 + ... + 989079217.

It is an arithmetic number, because the mean of its divisors is an integer number (6923554435).

Almost surely, 2^25716059317 is an apocalyptic number.

It is an amenable number.

25716059317 is a deficient number, since it is larger than the sum of its proper divisors (1978158423).

25716059317 is a wasteful number, since it uses less digits than its factorization.

25716059317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978158422.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 25716059317 in words is "twenty-five billion, seven hundred sixteen million, fifty-nine thousand, three hundred seventeen".