72750525413 has 2 divisors, whose sum is σ = 72750525414. Its totient is φ = 72750525412.

The previous prime is 72750525401. The next prime is 72750525431. The reversal of 72750525413 is 31452505727.

Together with next prime (72750525431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59622407329 + 13128118084 = 244177^2 + 114578^2 .

It is a cyclic number.

It is not a de Polignac number, because 72750525413 - 2⁸ = 72750525157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72750525013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36375262706 + 36375262707.

It is an arithmetic number, because the mean of its divisors is an integer number (36375262707).

Almost surely, 2^72750525413 is an apocalyptic number.

It is an amenable number.

72750525413 is a deficient number, since it is larger than the sum of its proper divisors (1).

72750525413 is an equidigital number, since it uses as much as digits as its factorization.

72750525413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294000, while the sum is 41.

The spelling of 72750525413 in words is "seventy-two billion, seven hundred fifty million, five hundred twenty-five thousand, four hundred thirteen".