72222575 has 12 divisors (see below), whose sum is σ = 90445848. Its totient is φ = 57204000.

The previous prime is 72222571. The next prime is 72222589. The reversal of 72222575 is 57522227.

It is not a de Polignac number, because 72222575 - 2² = 72222571 is a prime.

It is a super-2 number, since 2×72222575² = 10432200679261250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72222571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11777 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (7537154).

Almost surely, 2^72222575 is an apocalyptic number.

72222575 is a deficient number, since it is larger than the sum of its proper divisors (18223273).

72222575 is a wasteful number, since it uses less digits than its factorization.

72222575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28714 (or 28709 counting only the distinct ones).

The product of its digits is 19600, while the sum is 32.

The square root of 72222575 is about 8498.3866115869. The cubic root of 72222575 is about 416.4450038761.

The spelling of 72222575 in words is "seventy-two million, two hundred twenty-two thousand, five hundred seventy-five".