25431225422525 has 48 divisors (see below), whose sum is σ = 35144566520448. Its totient is φ = 18132929568000.

The previous prime is 25431225422483. The next prime is 25431225422549. The reversal of 25431225422525 is 52522452213452.

It is not a de Polignac number, because 25431225422525 - 2²⁶ = 25431158313661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6496721 + ... + 9647270.

It is an arithmetic number, because the mean of its divisors is an integer number (732178469176).

Almost surely, 2^{25431225422525} is an apocalyptic number.

25431225422525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25431225422525 is a deficient number, since it is larger than the sum of its proper divisors (9713341097923).

25431225422525 is a wasteful number, since it uses less digits than its factorization.

25431225422525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144182 (or 16144177 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 44.

Adding to 25431225422525 its reverse (52522452213452), we get a palindrome (77953677635977).

The spelling of 25431225422525 in words is "twenty-five trillion, four hundred thirty-one billion, two hundred twenty-five million, four hundred twenty-two thousand, five hundred twenty-five".