13102505 has 8 divisors (see below), whose sum is σ = 16932552. Its totient is φ = 9675648.

The previous prime is 13102499. The next prime is 13102511. The reversal of 13102505 is 50520131.

It is an interprime number because it is at equal distance from previous prime (13102499) and next prime (13102511).

It can be written as a sum of positive squares in 4 ways, for example, as 350464 + 12752041 = 592^2 + 3571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13102505 - 2¹⁴ = 13086121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100724 + ... + 100853.

It is an arithmetic number, because the mean of its divisors is an integer number (2116569).

Almost surely, 2^13102505 is an apocalyptic number.

It is an amenable number.

13102505 is a deficient number, since it is larger than the sum of its proper divisors (3830047).

13102505 is a wasteful number, since it uses less digits than its factorization.

13102505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201595.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13102505 is about 3619.7382502054. The cubic root of 13102505 is about 235.7498606501.

Adding to 13102505 its reverse (50520131), we get a palindrome (63622636).

The spelling of 13102505 in words is "thirteen million, one hundred two thousand, five hundred five".