72725623 has 4 divisors (see below), whose sum is σ = 72982888. Its totient is φ = 72468360.

The previous prime is 72725617. The next prime is 72725629. The reversal of 72725623 is 32652727.

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

It is an interprime number because it is at equal distance from previous prime (72725617) and next prime (72725629).

It is a cyclic number.

It is not a de Polignac number, because 72725623 - 2¹⁷ = 72594551 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 (72725629) 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, 128208 + ... + 128773.

It is an arithmetic number, because the mean of its divisors is an integer number (18245722).

Almost surely, 2^72725623 is an apocalyptic number.

72725623 is a deficient number, since it is larger than the sum of its proper divisors (257265).

72725623 is a wasteful number, since it uses less digits than its factorization.

72725623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257264.

The product of its digits is 35280, while the sum is 34.

The square root of 72725623 is about 8527.9319298409. The cubic root of 72725623 is about 417.4096482982.

The spelling of 72725623 in words is "seventy-two million, seven hundred twenty-five thousand, six hundred twenty-three".