25085611021825 has 24 divisors (see below), whose sum is σ = 31151656166400. Its totient is φ = 20039138981760.

The previous prime is 25085611021763. The next prime is 25085611021837. The reversal of 25085611021825 is 52812011658052.

It is a de Polignac number, because none of the positive numbers 2^k-25085611021825 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 300662064 + ... + 300745486.

It is an arithmetic number, because the mean of its divisors is an integer number (1297985673600).

Almost surely, 2^{25085611021825} is an apocalyptic number.

25085611021825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25085611021825 is a deficient number, since it is larger than the sum of its proper divisors (6066045144575).

25085611021825 is a wasteful number, since it uses less digits than its factorization.

25085611021825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100881 (or 100876 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 46.

Adding to 25085611021825 its reverse (52812011658052), we get a palindrome (77897622679877).

The spelling of 25085611021825 in words is "twenty-five trillion, eighty-five billion, six hundred eleven million, twenty-one thousand, eight hundred twenty-five".