25606353213 has 96 divisors (see below), whose sum is σ = 45070272000. Its totient is φ = 13985443584.

The previous prime is 25606353203. The next prime is 25606353217. The reversal of 25606353213 is 31235360652.

25606353213 is a `hidden beast` number, since 2 + 5 + 6 + 0 + 635 + 3 + 2 + 13 = 666.

It is not a de Polignac number, because 25606353213 - 2⁴ = 25606353197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25606353217) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9219481 + ... + 9222257.

It is an arithmetic number, because the mean of its divisors is an integer number (469482000).

Almost surely, 2^25606353213 is an apocalyptic number.

It is an amenable number.

25606353213 is a deficient number, since it is larger than the sum of its proper divisors (19463918787).

25606353213 is a wasteful number, since it uses less digits than its factorization.

25606353213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2919 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 25606353213 in words is "twenty-five billion, six hundred six million, three hundred fifty-three thousand, two hundred thirteen".