72974377725 has 24 divisors (see below), whose sum is σ = 120660610560. Its totient is φ = 38916558720.

The previous prime is 72974377643. The next prime is 72974377741. The reversal of 72974377725 is 52777347927.

It is not a de Polignac number, because 72974377725 - 2¹² = 72974373629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1144897 + ... + 1206953.

It is an arithmetic number, because the mean of its divisors is an integer number (5027525440).

Almost surely, 2^72974377725 is an apocalyptic number.

72974377725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72974377725 is a deficient number, since it is larger than the sum of its proper divisors (47686232835).

72974377725 is a wasteful number, since it uses less digits than its factorization.

72974377725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77749 (or 77744 counting only the distinct ones).

The product of its digits is 36303120, while the sum is 60.

The spelling of 72974377725 in words is "seventy-two billion, nine hundred seventy-four million, three hundred seventy-seven thousand, seven hundred twenty-five".