13025408509 has 4 divisors (see below), whose sum is σ = 13049221504. Its totient is φ = 13001595516.

The previous prime is 13025408503. The next prime is 13025408519. The reversal of 13025408509 is 90580452031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13025408509 - 2¹³ = 13025400317 is a prime.

It is a super-2 number, since 2×13025408509² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13025408503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11905677 + ... + 11906770.

It is an arithmetic number, because the mean of its divisors is an integer number (3262305376).

Almost surely, 2^13025408509 is an apocalyptic number.

It is an amenable number.

13025408509 is a deficient number, since it is larger than the sum of its proper divisors (23812995).

13025408509 is an equidigital number, since it uses as much as digits as its factorization.

13025408509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23812994.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 13025408509 in words is "thirteen billion, twenty-five million, four hundred eight thousand, five hundred nine".