125511522198 has 16 divisors (see below), whose sum is σ = 251027184240. Its totient is φ = 41836484096.

The previous prime is 125511522197. The next prime is 125511522203. The reversal of 125511522198 is 891225115521.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125511522197) 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, 337738 + ... + 604226.

It is an arithmetic number, because the mean of its divisors is an integer number (15689199015).

Almost surely, 2^125511522198 is an apocalyptic number.

125511522198 is an abundant number, since it is smaller than the sum of its proper divisors (125515662042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125511522198 is a wasteful number, since it uses less digits than its factorization.

125511522198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344991.

The product of its digits is 72000, while the sum is 42.

The spelling of 125511522198 in words is "one hundred twenty-five billion, five hundred eleven million, five hundred twenty-two thousand, one hundred ninety-eight".