72272565 has 24 divisors (see below), whose sum is σ = 127147488. Its totient is φ = 37968480.

The previous prime is 72272537. The next prime is 72272573. The reversal of 72272565 is 56527227.

72272565 is a `hidden beast` number, since 7 + 22 + 72 + 565 = 666.

It is not a de Polignac number, because 72272565 - 2¹⁰ = 72271541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8971 + ... + 15000.

It is an arithmetic number, because the mean of its divisors is an integer number (5297812).

Almost surely, 2^72272565 is an apocalyptic number.

It is an amenable number.

72272565 is a deficient number, since it is larger than the sum of its proper divisors (54874923).

72272565 is a wasteful number, since it uses less digits than its factorization.

72272565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24049 (or 24046 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 72272565 is about 8501.3272493182. The cubic root of 72272565 is about 416.5410647195.

The spelling of 72272565 in words is "seventy-two million, two hundred seventy-two thousand, five hundred sixty-five".