125522143 has 4 divisors (see below), whose sum is σ = 126425320. Its totient is φ = 124618968.

The previous prime is 125522123. The next prime is 125522149. The reversal of 125522143 is 341225521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125522143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125522149) 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, 451380 + ... + 451657.

It is an arithmetic number, because the mean of its divisors is an integer number (31606330).

Almost surely, 2^125522143 is an apocalyptic number.

125522143 is a deficient number, since it is larger than the sum of its proper divisors (903177).

125522143 is an equidigital number, since it uses as much as digits as its factorization.

125522143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903176.

The product of its digits is 2400, while the sum is 25.

The square root of 125522143 is about 11203.6664980711. Note that the first 3 decimals coincide. The cubic root of 125522143 is about 500.6952235471.

Adding to 125522143 its reverse (341225521), we get a palindrome (466747664).

The spelling of 125522143 in words is "one hundred twenty-five million, five hundred twenty-two thousand, one hundred forty-three".