72625757 has 2 divisors, whose sum is σ = 72625758. Its totient is φ = 72625756.

The previous prime is 72625673. The next prime is 72625769. The reversal of 72625757 is 75752627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62315236 + 10310521 = 7894^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 72625757 - 2¹⁴ = 72609373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72615757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36312878 + 36312879.

It is an arithmetic number, because the mean of its divisors is an integer number (36312879).

Almost surely, 2^72625757 is an apocalyptic number.

It is an amenable number.

72625757 is a deficient number, since it is larger than the sum of its proper divisors (1).

72625757 is an equidigital number, since it uses as much as digits as its factorization.

72625757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205800, while the sum is 41.

The square root of 72625757 is about 8522.0746887128. The cubic root of 72625757 is about 417.2185000469.

The spelling of 72625757 in words is "seventy-two million, six hundred twenty-five thousand, seven hundred fifty-seven".