26570125613 has 4 divisors (see below), whose sum is σ = 26966694720. Its totient is φ = 26173556508.

The previous prime is 26570125609. The next prime is 26570125643. The reversal of 26570125613 is 31652107562.

It is a happy number.

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 26570125613 - 2² = 26570125609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26570125643) 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, 198284453 + ... + 198284586.

It is an arithmetic number, because the mean of its divisors is an integer number (6741673680).

Almost surely, 2^26570125613 is an apocalyptic number.

It is an amenable number.

26570125613 is a deficient number, since it is larger than the sum of its proper divisors (396569107).

26570125613 is an equidigital number, since it uses as much as digits as its factorization.

26570125613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396569106.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 26570125613 in words is "twenty-six billion, five hundred seventy million, one hundred twenty-five thousand, six hundred thirteen".