125948979899 has 8 divisors (see below), whose sum is σ = 129029354160. Its totient is φ = 122869008000.

The previous prime is 125948979847. The next prime is 125948979911. The reversal of 125948979899 is 998979849521.

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-125948979899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125948979809) 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, 590447 + ... + 774935.

It is an arithmetic number, because the mean of its divisors is an integer number (16128669270).

Almost surely, 2^125948979899 is an apocalyptic number.

125948979899 is a deficient number, since it is larger than the sum of its proper divisors (3080374261).

125948979899 is a wasteful number, since it uses less digits than its factorization.

125948979899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201181.

The product of its digits is 1058158080, while the sum is 80.

The spelling of 125948979899 in words is "one hundred twenty-five billion, nine hundred forty-eight million, nine hundred seventy-nine thousand, eight hundred ninety-nine".