72325751 has 4 divisors (see below), whose sum is σ = 72989400. Its totient is φ = 71662104.

The previous prime is 72325733. The next prime is 72325793. The reversal of 72325751 is 15752327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72325751 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 (72325051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331661 + ... + 331878.

It is an arithmetic number, because the mean of its divisors is an integer number (18247350).

Almost surely, 2^72325751 is an apocalyptic number.

72325751 is a deficient number, since it is larger than the sum of its proper divisors (663649).

72325751 is a wasteful number, since it uses less digits than its factorization.

72325751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663648.

The product of its digits is 14700, while the sum is 32.

The square root of 72325751 is about 8504.4547738230. The cubic root of 72325751 is about 416.6432183782.

The spelling of 72325751 in words is "seventy-two million, three hundred twenty-five thousand, seven hundred fifty-one".