40525931 has 8 divisors (see below), whose sum is σ = 42447264. Its totient is φ = 38617920.

The previous prime is 40525913. The next prime is 40525937. The reversal of 40525931 is 13952504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40525931 - 2¹⁰ = 40524907 is a prime.

It is a super-2 number, since 2×40525931² = 3284702166833522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40525894 and 40525903.

It is not an unprimeable number, because it can be changed into a prime (40525937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3191 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (5305908).

Almost surely, 2^40525931 is an apocalyptic number.

40525931 is a deficient number, since it is larger than the sum of its proper divisors (1921333).

40525931 is a wasteful number, since it uses less digits than its factorization.

40525931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 40525931 is about 6365.9980364433. The cubic root of 40525931 is about 343.4875499317.

The spelling of 40525931 in words is "forty million, five hundred twenty-five thousand, nine hundred thirty-one".