72340825 has 24 divisors (see below), whose sum is σ = 93208320. Its totient is φ = 55636800.

The previous prime is 72340817. The next prime is 72340843. The reversal of 72340825 is 52804327.

It is not a de Polignac number, because 72340825 - 2³ = 72340817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 208302 + ... + 208648.

It is an arithmetic number, because the mean of its divisors is an integer number (3883680).

Almost surely, 2^72340825 is an apocalyptic number.

It is an amenable number.

72340825 is a deficient number, since it is larger than the sum of its proper divisors (20867495).

72340825 is a wasteful number, since it uses less digits than its factorization.

72340825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 72340825 is about 8505.3409690617. The cubic root of 72340825 is about 416.6721617053.

The spelling of 72340825 in words is "seventy-two million, three hundred forty thousand, eight hundred twenty-five".