72069225 has 24 divisors (see below), whose sum is σ = 119650080. Its totient is φ = 38277120.

The previous prime is 72069211. The next prime is 72069233. The reversal of 72069225 is 52296027.

It is a happy number.

It is not a de Polignac number, because 72069225 - 2⁴ = 72069209 is a prime.

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, 17406 + ... + 21144.

It is an arithmetic number, because the mean of its divisors is an integer number (4985420).

Almost surely, 2^72069225 is an apocalyptic number.

72069225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72069225 is a deficient number, since it is larger than the sum of its proper divisors (47580855).

72069225 is a wasteful number, since it uses less digits than its factorization.

72069225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009 (or 4004 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 72069225 is about 8489.3595164771. The cubic root of 72069225 is about 416.1500494986.

The spelling of 72069225 in words is "seventy-two million, sixty-nine thousand, two hundred twenty-five".