125078757209 has 8 divisors (see below), whose sum is σ = 144905331840. Its totient is φ = 105741727776.

The previous prime is 125078757179. The next prime is 125078757229. The reversal of 125078757209 is 902757870521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125078757209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125078757229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122385749 + ... + 122386770.

It is an arithmetic number, because the mean of its divisors is an integer number (18113166480).

Almost surely, 2^125078757209 is an apocalyptic number.

It is an amenable number.

125078757209 is a deficient number, since it is larger than the sum of its proper divisors (19826574631).

125078757209 is an equidigital number, since it uses as much as digits as its factorization.

125078757209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244772599.

The product of its (nonzero) digits is 2469600, while the sum is 53.

The spelling of 125078757209 in words is "one hundred twenty-five billion, seventy-eight million, seven hundred fifty-seven thousand, two hundred nine".