72025557 has 16 divisors (see below), whose sum is σ = 97200000. Its totient is φ = 47438144.

The previous prime is 72025543. The next prime is 72025601. The reversal of 72025557 is 75552027.

It is a cyclic number.

It is not a de Polignac number, because 72025557 - 2¹⁴ = 72009173 is a prime.

It is a super-2 number, since 2×72025557² = 10375361722320498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72025517) 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, 119944 + ... + 120542.

It is an arithmetic number, because the mean of its divisors is an integer number (6075000).

Almost surely, 2^72025557 is an apocalyptic number.

It is an amenable number.

72025557 is a deficient number, since it is larger than the sum of its proper divisors (25174443).

72025557 is a wasteful number, since it uses less digits than its factorization.

72025557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 72025557 is about 8486.7872012912. The cubic root of 72025557 is about 416.0659816600.

The spelling of 72025557 in words is "seventy-two million, twenty-five thousand, five hundred fifty-seven".