72525739 has 16 divisors (see below), whose sum is σ = 88913664. Its totient is φ = 58212000.

The previous prime is 72525731. The next prime is 72525743. The reversal of 72525739 is 93752527.

It is not a de Polignac number, because 72525739 - 2³ = 72525731 is a prime.

It is a super-2 number, since 2×72525739² = 10519965634992242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72525731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7737 + ... + 14314.

It is an arithmetic number, because the mean of its divisors is an integer number (5557104).

Almost surely, 2^72525739 is an apocalyptic number.

72525739 is a deficient number, since it is larger than the sum of its proper divisors (16387925).

72525739 is a wasteful number, since it uses less digits than its factorization.

72525739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22098.

The product of its digits is 132300, while the sum is 40.

The square root of 72525739 is about 8516.2044949614. The cubic root of 72525739 is about 417.0268851504.

The spelling of 72525739 in words is "seventy-two million, five hundred twenty-five thousand, seven hundred thirty-nine".