76625009 has 2 divisors, whose sum is σ = 76625010. Its totient is φ = 76625008.

The previous prime is 76624991. The next prime is 76625063. The reversal of 76625009 is 90052667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76615009 + 10000 = 8753^2 + 100^2 .

It is an emirp because it is prime and its reverse (90052667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76625009 - 2¹² = 76620913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76625009.

It is not a weakly prime, because it can be changed into another prime (76625209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38312504 + 38312505.

It is an arithmetic number, because the mean of its divisors is an integer number (38312505).

Almost surely, 2^76625009 is an apocalyptic number.

It is an amenable number.

76625009 is a deficient number, since it is larger than the sum of its proper divisors (1).

76625009 is an equidigital number, since it uses as much as digits as its factorization.

76625009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 76625009 is about 8753.5712140817. The cubic root of 76625009 is about 424.7403424302.

The spelling of 76625009 in words is "seventy-six million, six hundred twenty-five thousand, nine".