72072425 has 6 divisors (see below), whose sum is σ = 89369838. Its totient is φ = 57657920.

The previous prime is 72072419. The next prime is 72072437. The reversal of 72072425 is 52427027.

It can be written as a sum of positive squares in 3 ways, for example, as 7639696 + 64432729 = 2764^2 + 8027^2 .

It is not a de Polignac number, because 72072425 - 2¹⁰ = 72071401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1441424 + ... + 1441473.

It is an arithmetic number, because the mean of its divisors is an integer number (14894973).

Almost surely, 2^72072425 is an apocalyptic number.

It is an amenable number.

72072425 is a deficient number, since it is larger than the sum of its proper divisors (17297413).

72072425 is a wasteful number, since it uses less digits than its factorization.

72072425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882907 (or 2882902 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 72072425 is about 8489.5479856115. The cubic root of 72072425 is about 416.1562086715.

The spelling of 72072425 in words is "seventy-two million, seventy-two thousand, four hundred twenty-five".