15309040225 has 12 divisors (see below), whose sum is σ = 19446216300. Its totient is φ = 11948518400.

The previous prime is 15309040207. The next prime is 15309040249. The reversal of 15309040225 is 52204090351.

15309040225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2555403601 + 12753636624 = 50551^2 + 112932^2 .

It is not a de Polignac number, because 15309040225 - 2¹¹ = 15309038177 is a prime.

It is a super-2 number, since 2×15309040225² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7466800 + ... + 7468849.

It is an arithmetic number, because the mean of its divisors is an integer number (1620518025).

Almost surely, 2^15309040225 is an apocalyptic number.

It is an amenable number.

15309040225 is a deficient number, since it is larger than the sum of its proper divisors (4137176075).

15309040225 is a wasteful number, since it uses less digits than its factorization.

15309040225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14935700 (or 14935695 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 15309040225 in words is "fifteen billion, three hundred nine million, forty thousand, two hundred twenty-five".