25512122225 has 12 divisors (see below), whose sum is σ = 33300033840. Its totient is φ = 19335502800.

The previous prime is 25512122201. The next prime is 25512122249. The reversal of 25512122225 is 52222121552.

It is an interprime number because it is at equal distance from previous prime (25512122201) and next prime (25512122249).

It is not a de Polignac number, because 25512122225 - 2¹⁸ = 25511860081 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 26854391 + ... + 26855340.

It is an arithmetic number, because the mean of its divisors is an integer number (2775002820).

Almost surely, 2^25512122225 is an apocalyptic number.

25512122225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25512122225 is a deficient number, since it is larger than the sum of its proper divisors (7787911615).

25512122225 is a wasteful number, since it uses less digits than its factorization.

25512122225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53709760 (or 53709755 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

Adding to 25512122225 its reverse (52222121552), we get a palindrome (77734243777).

The spelling of 25512122225 in words is "twenty-five billion, five hundred twelve million, one hundred twenty-two thousand, two hundred twenty-five".