40025986731 has 16 divisors (see below), whose sum is σ = 61342509600. Its totient is φ = 25763853024.

The previous prime is 40025986727. The next prime is 40025986747. The reversal of 40025986731 is 13768952004.

40025986731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40025986731 - 2² = 40025986727 is a prime.

It is a super-2 number, since 2×40025986731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40025986711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25558596 + ... + 25560161.

It is an arithmetic number, because the mean of its divisors is an integer number (3833906850).

It is a 2-persistent number, because it is pandigital, and so is 2⋅40025986731 = 80051973462, but 3⋅40025986731 = 120077960193 is not.

Almost surely, 2^40025986731 is an apocalyptic number.

40025986731 is a deficient number, since it is larger than the sum of its proper divisors (21316522869).

40025986731 is a wasteful number, since it uses less digits than its factorization.

40025986731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51118795 (or 51118789 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 40025986731 in words is "forty billion, twenty-five million, nine hundred eighty-six thousand, seven hundred thirty-one".