125494304309 has 4 divisors (see below), whose sum is σ = 136902877440. Its totient is φ = 114085731180.

The previous prime is 125494304279. The next prime is 125494304311. The reversal of 125494304309 is 903403494521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125494304309 - 2²⁰ = 125493255733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125494304309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125494304329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5704286549 + ... + 5704286570.

It is an arithmetic number, because the mean of its divisors is an integer number (34225719360).

Almost surely, 2^125494304309 is an apocalyptic number.

It is an amenable number.

125494304309 is a deficient number, since it is larger than the sum of its proper divisors (11408573131).

125494304309 is a wasteful number, since it uses less digits than its factorization.

125494304309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408573130.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 125494304309 in words is "one hundred twenty-five billion, four hundred ninety-four million, three hundred four thousand, three hundred nine".