25503211413 has 12 divisors (see below), whose sum is σ = 37441874028. Its totient is φ = 16723416960.

The previous prime is 25503211333. The next prime is 25503211421. The reversal of 25503211413 is 31411230552.

It can be written as a sum of positive squares in 2 ways, for example, as 9161935524 + 16341275889 = 95718^2 + 127833^2 .

It is not a de Polignac number, because 25503211413 - 2²⁵ = 25469656981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25503211483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23226420 + ... + 23227517.

It is an arithmetic number, because the mean of its divisors is an integer number (3120156169).

Almost surely, 2^25503211413 is an apocalyptic number.

It is an amenable number.

25503211413 is a deficient number, since it is larger than the sum of its proper divisors (11938662615).

25503211413 is a wasteful number, since it uses less digits than its factorization.

25503211413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46454004 (or 46454001 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 25503211413 its reverse (31411230552), we get a palindrome (56914441965).

The spelling of 25503211413 in words is "twenty-five billion, five hundred three million, two hundred eleven thousand, four hundred thirteen".