13321510025 has 6 divisors (see below), whose sum is σ = 16518672462. Its totient is φ = 10657208000.

The previous prime is 13321510019. The next prime is 13321510031. The reversal of 13321510025 is 52001512331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13321510019) and next prime (13321510031).

It can be written as a sum of positive squares in 3 ways, for example, as 34798201 + 13286711824 = 5899^2 + 115268^2 .

It is not a de Polignac number, because 13321510025 - 2⁴ = 13321510009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 266430176 + ... + 266430225.

It is an arithmetic number, because the mean of its divisors is an integer number (2753112077).

Almost surely, 2^13321510025 is an apocalyptic number.

It is an amenable number.

13321510025 is a deficient number, since it is larger than the sum of its proper divisors (3197162437).

13321510025 is an equidigital number, since it uses as much as digits as its factorization.

13321510025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532860411 (or 532860406 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 13321510025 in words is "thirteen billion, three hundred twenty-one million, five hundred ten thousand, twenty-five".