40402317525 has 12 divisors (see below), whose sum is σ = 66798498432. Its totient is φ = 21547902640.

The previous prime is 40402317493. The next prime is 40402317563. The reversal of 40402317525 is 52571320404.

It is not a de Polignac number, because 40402317525 - 2⁵ = 40402317493 is a prime.

It is a super-2 number, since 2×40402317525² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269348709 + ... + 269348858.

It is an arithmetic number, because the mean of its divisors is an integer number (5566541536).

Almost surely, 2^40402317525 is an apocalyptic number.

It is an amenable number.

40402317525 is a deficient number, since it is larger than the sum of its proper divisors (26396180907).

40402317525 is a wasteful number, since it uses less digits than its factorization.

40402317525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538697580 (or 538697575 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

Adding to 40402317525 its reverse (52571320404), we get a palindrome (92973637929).

The spelling of 40402317525 in words is "forty billion, four hundred two million, three hundred seventeen thousand, five hundred twenty-five".