25250000025 has 24 divisors (see below), whose sum is σ = 41814404064. Its totient is φ = 13444816000.

The previous prime is 25249999997. The next prime is 25250000051. The reversal of 25250000025 is 52000005252.

It is not a de Polignac number, because 25250000025 - 2⁸ = 25249999769 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25249999956 and 25250000010.

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, 226551 + ... + 319100.

It is an arithmetic number, because the mean of its divisors is an integer number (1742266836).

Almost surely, 2^25250000025 is an apocalyptic number.

25250000025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25250000025 is a deficient number, since it is larger than the sum of its proper divisors (16564404039).

25250000025 is a wasteful number, since it uses less digits than its factorization.

25250000025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546281 (or 546276 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

Adding to 25250000025 its reverse (52000005252), we get a palindrome (77250005277).

The spelling of 25250000025 in words is "twenty-five billion, two hundred fifty million, twenty-five", and thus it is an aban number.