25163020605 has 16 divisors (see below), whose sum is σ = 40341528000. Its totient is φ = 13393379328.

The previous prime is 25163020583. The next prime is 25163020627. The reversal of 25163020605 is 50602036152.

It is an interprime number because it is at equal distance from previous prime (25163020583) and next prime (25163020627).

It is not a de Polignac number, because 25163020605 - 2⁶ = 25163020541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1673412 + ... + 1688381.

It is an arithmetic number, because the mean of its divisors is an integer number (2521345500).

Almost surely, 2^25163020605 is an apocalyptic number.

It is an amenable number.

25163020605 is a deficient number, since it is larger than the sum of its proper divisors (15178507395).

25163020605 is a wasteful number, since it uses less digits than its factorization.

25163020605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362300.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 25163020605 its reverse (50602036152), we get a palindrome (75765056757).

The spelling of 25163020605 in words is "twenty-five billion, one hundred sixty-three million, twenty thousand, six hundred five".