73252525009 has 2 divisors, whose sum is σ = 73252525010. Its totient is φ = 73252525008.

The previous prime is 73252524971. The next prime is 73252525033. The reversal of 73252525009 is 90052525237.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53868089025 + 19384435984 = 232095^2 + 139228^2 .

It is a cyclic number.

It is not a de Polignac number, because 73252525009 - 2¹¹ = 73252522961 is a prime.

It is not a weakly prime, because it can be changed into another prime (73252525079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36626262504 + 36626262505.

It is an arithmetic number, because the mean of its divisors is an integer number (36626262505).

Almost surely, 2^73252525009 is an apocalyptic number.

It is an amenable number.

73252525009 is a deficient number, since it is larger than the sum of its proper divisors (1).

73252525009 is an equidigital number, since it uses as much as digits as its factorization.

73252525009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 73252525009 in words is "seventy-three billion, two hundred fifty-two million, five hundred twenty-five thousand, nine".