40072144625 has 8 divisors (see below), whose sum is σ = 50010036648. Its totient is φ = 32057715600.

The previous prime is 40072144597. The next prime is 40072144627. The reversal of 40072144625 is 52644127004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3177802384 + 36894342241 = 56372^2 + 192079^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40072144625 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40072144627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160288454 + ... + 160288703.

It is an arithmetic number, because the mean of its divisors is an integer number (6251254581).

Almost surely, 2^40072144625 is an apocalyptic number.

It is an amenable number.

40072144625 is a deficient number, since it is larger than the sum of its proper divisors (9937892023).

40072144625 is an equidigital number, since it uses as much as digits as its factorization.

40072144625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320577172 (or 320577162 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 40072144625 in words is "forty billion, seventy-two million, one hundred forty-four thousand, six hundred twenty-five".