13309998225 has 48 divisors (see below), whose sum is σ = 23033001984. Its totient is φ = 6769224000.

The previous prime is 13309998217. The next prime is 13309998257. The reversal of 13309998225 is 52289990331.

It is not a de Polignac number, because 13309998225 - 2³ = 13309998217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 559320 + ... + 582630.

It is an arithmetic number, because the mean of its divisors is an integer number (479854208).

Almost surely, 2^13309998225 is an apocalyptic number.

13309998225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13309998225 is a deficient number, since it is larger than the sum of its proper divisors (9723003759).

13309998225 is a wasteful number, since it uses less digits than its factorization.

13309998225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23678 (or 23673 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 13309998225 in words is "thirteen billion, three hundred nine million, nine hundred ninety-eight thousand, two hundred twenty-five".