72393925 has 6 divisors (see below), whose sum is σ = 89768498. Its totient is φ = 57915120.

The previous prime is 72393911. The next prime is 72393929. The reversal of 72393925 is 52939327.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4397409 + 67996516 = 2097^2 + 8246^2 .

It is not a de Polignac number, because 72393925 - 2¹¹ = 72391877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72393929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1447854 + ... + 1447903.

Almost surely, 2^72393925 is an apocalyptic number.

It is an amenable number.

72393925 is a deficient number, since it is larger than the sum of its proper divisors (17374573).

72393925 is a wasteful number, since it uses less digits than its factorization.

72393925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895767 (or 2895762 counting only the distinct ones).

The product of its digits is 102060, while the sum is 40.

The square root of 72393925 is about 8508.4619644211. The cubic root of 72393925 is about 416.7740860820.

It can be divided in two parts, 7 and 2393925, that added together give a palindrome (2393932).

The spelling of 72393925 in words is "seventy-two million, three hundred ninety-three thousand, nine hundred twenty-five".