25311101425 has 6 divisors (see below), whose sum is σ = 31385765798. Its totient is φ = 20248881120.

The previous prime is 25311101399. The next prime is 25311101437. The reversal of 25311101425 is 52410111352.

It can be written as a sum of positive squares in 3 ways, for example, as 56806369 + 25254295056 = 7537^2 + 158916^2 .

It is not a de Polignac number, because 25311101425 - 2⁵ = 25311101393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1012444057 = 25311101425 / (2 + 5 + 3 + 1 + 1 + 1 + 0 + 1 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25311101425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506222004 + ... + 506222053.

Almost surely, 2^25311101425 is an apocalyptic number.

25311101425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25311101425 is a deficient number, since it is larger than the sum of its proper divisors (6074664373).

25311101425 is a wasteful number, since it uses less digits than its factorization.

25311101425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012444067 (or 1012444062 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 25311101425 its reverse (52410111352), we get a palindrome (77721212777).

It can be divided in two parts, 25311 and 101425, that added together give a square (126736 = 356²).

The spelling of 25311101425 in words is "twenty-five billion, three hundred eleven million, one hundred one thousand, four hundred twenty-five".