40525131 has 4 divisors (see below), whose sum is σ = 54033512. Its totient is φ = 27016752.

The previous prime is 40525109. The next prime is 40525181. The reversal of 40525131 is 13152504.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40525131 - 2⁵ = 40525099 is a prime.

It is a super-2 number, since 2×40525131² = 3284572485134322, 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 = 40525098 and 40525107.

It is not an unprimeable number, because it can be changed into a prime (40525181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6754186 + ... + 6754191.

It is an arithmetic number, because the mean of its divisors is an integer number (13508378).

Almost surely, 2^40525131 is an apocalyptic number.

40525131 is a deficient number, since it is larger than the sum of its proper divisors (13508381).

40525131 is a wasteful number, since it uses less digits than its factorization.

40525131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13508380.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40525131 is about 6365.9352023092. The cubic root of 40525131 is about 343.4852897175.

Adding to 40525131 its reverse (13152504), we get a palindrome (53677635).

The spelling of 40525131 in words is "forty million, five hundred twenty-five thousand, one hundred thirty-one".