15250600121 has 4 divisors (see below), whose sum is σ = 15265715700. Its totient is φ = 15235484544.

The previous prime is 15250600093. The next prime is 15250600139. The reversal of 15250600121 is 12100605251.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8637657721 + 6612942400 = 92939^2 + 81320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15250600121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15250600151) 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, 7556276 + ... + 7558293.

It is an arithmetic number, because the mean of its divisors is an integer number (3816428925).

Almost surely, 2^15250600121 is an apocalyptic number.

It is an amenable number.

15250600121 is a deficient number, since it is larger than the sum of its proper divisors (15115579).

15250600121 is a wasteful number, since it uses less digits than its factorization.

15250600121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115578.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 15250600121 in words is "fifteen billion, two hundred fifty million, six hundred thousand, one hundred twenty-one".