72156006403525 has 24 divisors (see below), whose sum is σ = 97616069680608. Its totient is φ = 52472433240000.

The previous prime is 72156006403517. The next prime is 72156006403549. The reversal of 72156006403525 is 52530460065127.

It is a happy number.

It is not a de Polignac number, because 72156006403525 - 2³ = 72156006403517 is a prime.

It is a Duffinian 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, 8553411 + ... + 14746960.

It is an arithmetic number, because the mean of its divisors is an integer number (4067336236692).

Almost surely, 2^{72156006403525} is an apocalyptic number.

It is an amenable number.

72156006403525 is a deficient number, since it is larger than the sum of its proper divisors (25460063277083).

72156006403525 is a wasteful number, since it uses less digits than its factorization.

72156006403525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23311653 (or 23311648 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 72156006403525 in words is "seventy-two trillion, one hundred fifty-six billion, six million, four hundred three thousand, five hundred twenty-five".