40013306125 has 24 divisors (see below), whose sum is σ = 54073394856. Its totient is φ = 29548272000.

The previous prime is 40013306119. The next prime is 40013306153. The reversal of 40013306125 is 52160331004.

It can be written as a sum of positive squares in 12 ways, for example, as 33338742921 + 6674563204 = 182589^2 + 81698^2 .

It is not a de Polignac number, because 40013306125 - 2⁵ = 40013306093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 40013306125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 925936 + ... + 968185.

It is an arithmetic number, because the mean of its divisors is an integer number (2253058119).

Almost surely, 2^40013306125 is an apocalyptic number.

It is an amenable number.

40013306125 is a deficient number, since it is larger than the sum of its proper divisors (14060088731).

40013306125 is a wasteful number, since it uses less digits than its factorization.

40013306125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894162 (or 1894139 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 40013306125 its reverse (52160331004), we get a palindrome (92173637129).

The spelling of 40013306125 in words is "forty billion, thirteen million, three hundred six thousand, one hundred twenty-five".