25929806013 has 36 divisors (see below), whose sum is σ = 38656318428. Its totient is φ = 16738980480.

The previous prime is 25929805999. The next prime is 25929806029. The reversal of 25929806013 is 31060892952.

It can be written as a sum of positive squares in 2 ways, for example, as 952216164 + 24977589849 = 30858^2 + 158043^2 .

It is not a de Polignac number, because 25929806013 - 2¹² = 25929801917 is a prime.

It is a super-3 number, since 3×25929806013³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25929806013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25929806093) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7127631 + ... + 7131267.

It is an arithmetic number, because the mean of its divisors is an integer number (1073786623).

Almost surely, 2^25929806013 is an apocalyptic number.

It is an amenable number.

25929806013 is a deficient number, since it is larger than the sum of its proper divisors (12726512415).

25929806013 is a wasteful number, since it uses less digits than its factorization.

25929806013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 25929806013 in words is "twenty-five billion, nine hundred twenty-nine million, eight hundred six thousand, thirteen".