72176361525 has 96 divisors (see below), whose sum is σ = 146494552320. Its totient is φ = 34654371840.

The previous prime is 72176361487. The next prime is 72176361557. The reversal of 72176361525 is 52516367127.

It is a happy number.

72176361525 is a `hidden beast` number, since 7 + 2 + 1 + 7 + 6 + 3 + 615 + 25 = 666.

It is not a de Polignac number, because 72176361525 - 2¹⁸ = 72176099381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 127189 + ... + 400661.

It is an arithmetic number, because the mean of its divisors is an integer number (1525984920).

Almost surely, 2^72176361525 is an apocalyptic number.

72176361525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72176361525 is an abundant number, since it is smaller than the sum of its proper divisors (74318190795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72176361525 is a wasteful number, since it uses less digits than its factorization.

72176361525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273532 (or 273521 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The spelling of 72176361525 in words is "seventy-two billion, one hundred seventy-six million, three hundred sixty-one thousand, five hundred twenty-five".