25420034125 has 32 divisors (see below), whose sum is σ = 35050848768. Its totient is φ = 18307590400.

The previous prime is 25420034117. The next prime is 25420034173. The reversal of 25420034125 is 52143002452.

It is not a de Polignac number, because 25420034125 - 2³ = 25420034117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25420034093 and 25420034102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211177 + ... + 308926.

It is an arithmetic number, because the mean of its divisors is an integer number (1095339024).

Almost surely, 2^25420034125 is an apocalyptic number.

25420034125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25420034125 is a deficient number, since it is larger than the sum of its proper divisors (9630814643).

25420034125 is a wasteful number, since it uses less digits than its factorization.

25420034125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520158 (or 520148 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 25420034125 its reverse (52143002452), we get a palindrome (77563036577).

The spelling of 25420034125 in words is "twenty-five billion, four hundred twenty million, thirty-four thousand, one hundred twenty-five".