72625558 has 4 divisors (see below), whose sum is σ = 108938340. Its totient is φ = 36312778.

The previous prime is 72625523. The next prime is 72625577. The reversal of 72625558 is 85552627.

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

It is a super-3 number, since 3×72625558³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72625558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18156388 + ... + 18156391.

It is an arithmetic number, because the mean of its divisors is an integer number (27234585).

Almost surely, 2^72625558 is an apocalyptic number.

72625558 is a deficient number, since it is larger than the sum of its proper divisors (36312782).

72625558 is a wasteful number, since it uses less digits than its factorization.

72625558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36312781.

The product of its digits is 168000, while the sum is 40.

The square root of 72625558 is about 8522.0630131442. The cubic root of 72625558 is about 417.2181189766.

The spelling of 72625558 in words is "seventy-two million, six hundred twenty-five thousand, five hundred fifty-eight".