26725613 has 4 divisors (see below), whose sum is σ = 26736540. Its totient is φ = 26714688.

The previous prime is 26725579. The next prime is 26725619. The reversal of 26725613 is 31652762.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31652762 = 2 ⋅15826381.

It can be written as a sum of positive squares in 2 ways, for example, as 16752649 + 9972964 = 4093^2 + 3158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26725613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26725613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26725619) 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, 83 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (6684135).

Almost surely, 2^26725613 is an apocalyptic number.

It is an amenable number.

26725613 is a deficient number, since it is larger than the sum of its proper divisors (10927).

26725613 is an equidigital number, since it uses as much as digits as its factorization.

26725613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10926.

The product of its digits is 15120, while the sum is 32.

The square root of 26725613 is about 5169.6820985434. The cubic root of 26725613 is about 298.9802897489.

The spelling of 26725613 in words is "twenty-six million, seven hundred twenty-five thousand, six hundred thirteen".