72154325 has 12 divisors (see below), whose sum is σ = 89766948. Its totient is φ = 57532800.

The previous prime is 72154309. The next prime is 72154351. The reversal of 72154325 is 52345127.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4355569 + 67798756 = 2087^2 + 8234^2 .

It is not a de Polignac number, because 72154325 - 2⁴ = 72154309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3215 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (7480579).

Almost surely, 2^72154325 is an apocalyptic number.

It is an amenable number.

72154325 is a deficient number, since it is larger than the sum of its proper divisors (17612623).

72154325 is a wasteful number, since it uses less digits than its factorization.

72154325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9544 (or 9539 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 72154325 is about 8494.3701944288. The cubic root of 72154325 is about 416.3137829976.

The spelling of 72154325 in words is "seventy-two million, one hundred fifty-four thousand, three hundred twenty-five".