72525931 has 2 divisors, whose sum is σ = 72525932. Its totient is φ = 72525930.

The previous prime is 72525917. The next prime is 72525989. The reversal of 72525931 is 13952527.

It is a weak prime.

It is an emirp because it is prime and its reverse (13952527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72525931 - 2¹¹ = 72523883 is a prime.

It is a super-2 number, since 2×72525931² = 10520021334833522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72525331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36262965 + 36262966.

It is an arithmetic number, because the mean of its divisors is an integer number (36262966).

Almost surely, 2^72525931 is an apocalyptic number.

72525931 is a deficient number, since it is larger than the sum of its proper divisors (1).

72525931 is an equidigital number, since it uses as much as digits as its factorization.

72525931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 72525931 is about 8516.2157675813. The cubic root of 72525931 is about 417.0272531535.

The spelling of 72525931 in words is "seventy-two million, five hundred twenty-five thousand, nine hundred thirty-one".