15125144220 has 72 divisors (see below), whose sum is σ = 46946595696. Its totient is φ = 3939570432.

The previous prime is 15125144191. The next prime is 15125144233. The reversal of 15125144220 is 2244152151.

It is a happy number.

15125144220 is a `hidden beast` number, since 1 + 512 + 5 + 144 + 2 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 969337 + ... + 984816.

Almost surely, 2^15125144220 is an apocalyptic number.

15125144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15125144220 is an abundant number, since it is smaller than the sum of its proper divisors (31821451476).

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

15125144220 is a wasteful number, since it uses less digits than its factorization.

15125144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954211 (or 1954206 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 15125144220 its reverse (2244152151), we get a palindrome (17369296371).

The spelling of 15125144220 in words is "fifteen billion, one hundred twenty-five million, one hundred forty-four thousand, two hundred twenty".