40091911725 has 48 divisors (see below), whose sum is σ = 68556437504. Its totient is φ = 20652408000.

The previous prime is 40091911661. The next prime is 40091911729. The reversal of 40091911725 is 52711919004.

It is not a de Polignac number, because 40091911725 - 2⁶ = 40091911661 is a prime.

It is a super-2 number, since 2×40091911725² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40091911729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1199490 + ... + 1232460.

Almost surely, 2^40091911725 is an apocalyptic number.

It is an amenable number.

40091911725 is a deficient number, since it is larger than the sum of its proper divisors (28464525779).

40091911725 is a wasteful number, since it uses less digits than its factorization.

40091911725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33538 (or 33533 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The spelling of 40091911725 in words is "forty billion, ninety-one million, nine hundred eleven thousand, seven hundred twenty-five".