72125747 has 8 divisors (see below), whose sum is σ = 78832512. Its totient is φ = 65692800.

The previous prime is 72125743. The next prime is 72125761. The reversal of 72125747 is 74752127.

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 72125747 - 2² = 72125743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72125741) 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, 67904 + ... + 68957.

It is an arithmetic number, because the mean of its divisors is an integer number (9854064).

Almost surely, 2^72125747 is an apocalyptic number.

72125747 is a deficient number, since it is larger than the sum of its proper divisors (6706765).

72125747 is a wasteful number, since it uses less digits than its factorization.

72125747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136909.

The product of its digits is 27440, while the sum is 35.

The square root of 72125747 is about 8492.6878548549. The cubic root of 72125747 is about 416.2588129208.

The spelling of 72125747 in words is "seventy-two million, one hundred twenty-five thousand, seven hundred forty-seven".