72125555261 has 8 divisors (see below), whose sum is σ = 76321471104. Its totient is φ = 68017974640.

The previous prime is 72125555197. The next prime is 72125555269. The reversal of 72125555261 is 16255552127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72125555261 - 2⁶ = 72125555197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72125555269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22082126 + ... + 22085391.

It is an arithmetic number, because the mean of its divisors is an integer number (9540183888).

Almost surely, 2^72125555261 is an apocalyptic number.

72125555261 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

72125555261 is a deficient number, since it is larger than the sum of its proper divisors (4195915843).

72125555261 is a wasteful number, since it uses less digits than its factorization.

72125555261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44167611.

The product of its digits is 210000, while the sum is 41.

The spelling of 72125555261 in words is "seventy-two billion, one hundred twenty-five million, five hundred fifty-five thousand, two hundred sixty-one".