15134221225 has 12 divisors (see below), whose sum is σ = 18772513884. Its totient is φ = 12103454720.

The previous prime is 15134221211. The next prime is 15134221241. The reversal of 15134221225 is 52212243151.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4673636496 + 10460584729 = 68364^2 + 102277^2 .

It is not a de Polignac number, because 15134221225 - 2²⁷ = 15000003497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15134221193 and 15134221202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18064 + ... + 174913.

It is an arithmetic number, because the mean of its divisors is an integer number (1564376157).

Almost surely, 2^15134221225 is an apocalyptic number.

It is an amenable number.

15134221225 is a deficient number, since it is larger than the sum of its proper divisors (3638292659).

15134221225 is a wasteful number, since it uses less digits than its factorization.

15134221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196124 (or 196119 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

Adding to 15134221225 its reverse (52212243151), we get a palindrome (67346464376).

The spelling of 15134221225 in words is "fifteen billion, one hundred thirty-four million, two hundred twenty-one thousand, two hundred twenty-five".