25557120325 has 48 divisors (see below), whose sum is σ = 34922764800. Its totient is φ = 18399153600.

The previous prime is 25557120317. The next prime is 25557120331. The reversal of 25557120325 is 52302175552.

It is not a de Polignac number, because 25557120325 - 2³ = 25557120317 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 16780014 + ... + 16781536.

It is an arithmetic number, because the mean of its divisors is an integer number (727557600).

Almost surely, 2^25557120325 is an apocalyptic number.

25557120325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25557120325 is a deficient number, since it is larger than the sum of its proper divisors (9365644475).

25557120325 is a wasteful number, since it uses less digits than its factorization.

25557120325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122 (or 2117 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 37.

Adding to 25557120325 its reverse (52302175552), we get a palindrome (77859295877).

The spelling of 25557120325 in words is "twenty-five billion, five hundred fifty-seven million, one hundred twenty thousand, three hundred twenty-five".