40640079925 has 24 divisors (see below), whose sum is σ = 53515503360. Its totient is φ = 30528288000.

The previous prime is 40640079923. The next prime is 40640079947. The reversal of 40640079925 is 52997004604.

40640079925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40640079925 - 2¹ = 40640079923 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40640079923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324901 + ... + 432250.

It is an arithmetic number, because the mean of its divisors is an integer number (2229812640).

Almost surely, 2^40640079925 is an apocalyptic number.

It is an amenable number.

40640079925 is a deficient number, since it is larger than the sum of its proper divisors (12875423435).

40640079925 is a wasteful number, since it uses less digits than its factorization.

40640079925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757293 (or 757288 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 40640079925 in words is "forty billion, six hundred forty million, seventy-nine thousand, nine hundred twenty-five".