40129711825 has 24 divisors (see below), whose sum is σ = 57251246400. Its totient is φ = 27332817600.

The previous prime is 40129711789. The next prime is 40129711847. The reversal of 40129711825 is 52811792104.

It is not a de Polignac number, because 40129711825 - 2¹⁹ = 40129187537 is a prime.

It is a super-2 number, since 2×40129711825² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 743431 + ... + 795580.

It is an arithmetic number, because the mean of its divisors is an integer number (2385468600).

Almost surely, 2^40129711825 is an apocalyptic number.

It is an amenable number.

40129711825 is a deficient number, since it is larger than the sum of its proper divisors (17121534575).

40129711825 is a wasteful number, since it uses less digits than its factorization.

40129711825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539177 (or 1539172 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 40129711825 in words is "forty billion, one hundred twenty-nine million, seven hundred eleven thousand, eight hundred twenty-five".