7245912109 has 2 divisors, whose sum is σ = 7245912110. Its totient is φ = 7245912108.

The previous prime is 7245912103. The next prime is 7245912239. The reversal of 7245912109 is 9012195427.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4698691209 + 2547220900 = 68547^2 + 50470^2 .

It is a cyclic number.

It is not a de Polignac number, because 7245912109 - 2²⁹ = 6709041197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7245912103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3622956054 + 3622956055.

It is an arithmetic number, because the mean of its divisors is an integer number (3622956055).

Almost surely, 2^7245912109 is an apocalyptic number.

It is an amenable number.

7245912109 is a deficient number, since it is larger than the sum of its proper divisors (1).

7245912109 is an equidigital number, since it uses as much as digits as its factorization.

7245912109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 7245912109 is about 85122.9235223979. The cubic root of 7245912109 is about 1935.0744882043.

The spelling of 7245912109 in words is "seven billion, two hundred forty-five million, nine hundred twelve thousand, one hundred nine".