25460432317 has 4 divisors (see below), whose sum is σ = 25607602620. Its totient is φ = 25313262016.

The previous prime is 25460432303. The next prime is 25460432353. The reversal of 25460432317 is 71323406452.

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 14061453561 + 11398978756 = 118581^2 + 106766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25460432317 is a prime.

It is a super-2 number, since 2×25460432317² (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 (25460432717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73584892 + ... + 73585237.

It is an arithmetic number, because the mean of its divisors is an integer number (6401900655).

Almost surely, 2^25460432317 is an apocalyptic number.

It is an amenable number.

25460432317 is a deficient number, since it is larger than the sum of its proper divisors (147170303).

25460432317 is a wasteful number, since it uses less digits than its factorization.

25460432317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147170302.

The product of its (nonzero) digits is 120960, while the sum is 37.

Adding to 25460432317 its reverse (71323406452), we get a palindrome (96783838769).

The spelling of 25460432317 in words is "twenty-five billion, four hundred sixty million, four hundred thirty-two thousand, three hundred seventeen".