125221075199 has 24 divisors (see below), whose sum is σ = 139470130800. Its totient is φ = 112326853760.

The previous prime is 125221075193. The next prime is 125221075207. The reversal of 125221075199 is 991570122521.

It is not a de Polignac number, because 125221075199 - 2¹⁶ = 125221009663 is a prime.

It is a super-2 number, since 2×125221075199² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125221075193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8599577 + ... + 8614125.

It is an arithmetic number, because the mean of its divisors is an integer number (5811255450).

Almost surely, 2^125221075199 is an apocalyptic number.

125221075199 is a deficient number, since it is larger than the sum of its proper divisors (14249055601).

125221075199 is a wasteful number, since it uses less digits than its factorization.

125221075199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15511 (or 15500 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The spelling of 125221075199 in words is "one hundred twenty-five billion, two hundred twenty-one million, seventy-five thousand, one hundred ninety-nine".