72978964925 has 12 divisors (see below), whose sum is σ = 94428435360. Its totient is φ = 55844772720.

The previous prime is 72978964901. The next prime is 72978964937. The reversal of 72978964925 is 52946987927.

It is a happy number.

It is not a de Polignac number, because 72978964925 - 2¹⁴ = 72978948541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63459395 + ... + 63460544.

It is an arithmetic number, because the mean of its divisors is an integer number (7869036280).

Almost surely, 2^72978964925 is an apocalyptic number.

It is an amenable number.

72978964925 is a deficient number, since it is larger than the sum of its proper divisors (21449470435).

72978964925 is a wasteful number, since it uses less digits than its factorization.

72978964925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126919972 (or 126919967 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 68.

The spelling of 72978964925 in words is "seventy-two billion, nine hundred seventy-eight million, nine hundred sixty-four thousand, nine hundred twenty-five".