26513625601 has 4 divisors (see below), whose sum is σ = 27909079600. Its totient is φ = 25118171604.

The previous prime is 26513625599. The next prime is 26513625617. The reversal of 26513625601 is 10652631562.

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 26513625601 - 2¹ = 26513625599 is a prime.

It is a super-2 number, since 2×26513625601² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26513625631) 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, 697726971 + ... + 697727008.

It is an arithmetic number, because the mean of its divisors is an integer number (6977269900).

Almost surely, 2^26513625601 is an apocalyptic number.

It is an amenable number.

26513625601 is a deficient number, since it is larger than the sum of its proper divisors (1395453999).

26513625601 is a wasteful number, since it uses less digits than its factorization.

26513625601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395453998.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 26513625601 in words is "twenty-six billion, five hundred thirteen million, six hundred twenty-five thousand, six hundred one".