40125501 has 72 divisors (see below), whose sum is σ = 69428736. Its totient is φ = 22239360.

The previous prime is 40125497. The next prime is 40125521. The reversal of 40125501 is 10552104.

40125501 is a `hidden beast` number, since 40 + 125 + 501 = 666.

It is not a de Polignac number, because 40125501 - 2² = 40125497 is a prime.

It is a super-2 number, since 2×40125501² = 3220111661002002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1084455 + ... + 1084491.

It is an arithmetic number, because the mean of its divisors is an integer number (964288).

Almost surely, 2^40125501 is an apocalyptic number.

It is an amenable number.

40125501 is a deficient number, since it is larger than the sum of its proper divisors (29303235).

40125501 is a wasteful number, since it uses less digits than its factorization.

40125501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 40125501 is about 6334.4692753221. The cubic root of 40125501 is about 342.3524887357.

Adding to 40125501 its reverse (10552104), we get a palindrome (50677605).

The spelling of 40125501 in words is "forty million, one hundred twenty-five thousand, five hundred one".