25413225125 has 8 divisors (see below), whose sum is σ = 31715705112. Its totient is φ = 20330580000.

The previous prime is 25413225107. The next prime is 25413225199. The reversal of 25413225125 is 52152231452.

It can be written as a sum of positive squares in 4 ways, for example, as 2104790884 + 23308434241 = 45878^2 + 152671^2 .

It is not a de Polignac number, because 25413225125 - 2¹⁶ = 25413159589 is a prime.

It is a super-2 number, since 2×25413225125² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25413225091 and 25413225100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101652776 + ... + 101653025.

It is an arithmetic number, because the mean of its divisors is an integer number (3964463139).

Almost surely, 2^25413225125 is an apocalyptic number.

25413225125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25413225125 is a deficient number, since it is larger than the sum of its proper divisors (6302479987).

25413225125 is an equidigital number, since it uses as much as digits as its factorization.

25413225125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203305816 (or 203305806 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

Adding to 25413225125 its reverse (52152231452), we get a palindrome (77565456577).

The spelling of 25413225125 in words is "twenty-five billion, four hundred thirteen million, two hundred twenty-five thousand, one hundred twenty-five".