5142221125 has 16 divisors (see below), whose sum is σ = 6431606064. Its totient is φ = 4104729600.

The previous prime is 5142221111. The next prime is 5142221129. The reversal of 5142221125 is 5211222415.

It can be written as a sum of positive squares in 8 ways, for example, as 151363809 + 4990857316 = 12303^2 + 70646^2 .

It is not a de Polignac number, because 5142221125 - 2⁷ = 5142220997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5142221125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5142221129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12117 + ... + 102133.

It is an arithmetic number, because the mean of its divisors is an integer number (401975379).

Almost surely, 2^5142221125 is an apocalyptic number.

It is an amenable number.

5142221125 is a deficient number, since it is larger than the sum of its proper divisors (1289384939).

5142221125 is an equidigital number, since it uses as much as digits as its factorization.

5142221125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90489 (or 90479 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 5142221125 is about 71709.2820003101. The cubic root of 5142221125 is about 1726.0375890247.

The spelling of 5142221125 in words is "five billion, one hundred forty-two million, two hundred twenty-one thousand, one hundred twenty-five".