5515243225 has 12 divisors (see below), whose sum is σ = 6915745980. Its totient is φ = 4362617600.

The previous prime is 5515243213. The next prime is 5515243249. The reversal of 5515243225 is 5223425155.

It can be written as a sum of positive squares in 6 ways, for example, as 1630463641 + 3884779584 = 40379^2 + 62328^2 .

It is not a de Polignac number, because 5515243225 - 2²⁷ = 5381025497 is a prime.

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, 1237156 + ... + 1241605.

It is an arithmetic number, because the mean of its divisors is an integer number (576312165).

Almost surely, 2^5515243225 is an apocalyptic number.

It is an amenable number.

5515243225 is a deficient number, since it is larger than the sum of its proper divisors (1400502755).

5515243225 is a wasteful number, since it uses less digits than its factorization.

5515243225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478860 (or 2478855 counting only the distinct ones).

The product of its digits is 60000, while the sum is 34.

The square root of 5515243225 is about 74264.6835649355. The cubic root of 5515243225 is about 1766.8033875243.

The spelling of 5515243225 in words is "five billion, five hundred fifteen million, two hundred forty-three thousand, two hundred twenty-five".