25251000129 has 8 divisors (see below), whose sum is σ = 37408889120. Its totient is φ = 16834000068.

The previous prime is 25251000113. The next prime is 25251000149. The reversal of 25251000129 is 92100015252.

25251000129 is a `hidden beast` number, since 2 + 525 + 10 + 0 + 0 + 129 = 666.

It is not a de Polignac number, because 25251000129 - 2⁴ = 25251000113 is a prime.

It is a super-2 number, since 2×25251000129² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 935222227 = 25251000129 / (2 + 5 + 2 + 5 + 1 + 0 + 0 + 0 + 1 + 2 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25251000149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467611087 + ... + 467611140.

It is an arithmetic number, because the mean of its divisors is an integer number (4676111140).

Almost surely, 2^25251000129 is an apocalyptic number.

It is an amenable number.

25251000129 is a deficient number, since it is larger than the sum of its proper divisors (12157888991).

25251000129 is an equidigital number, since it uses as much as digits as its factorization.

25251000129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935222236 (or 935222230 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 25251000129 in words is "twenty-five billion, two hundred fifty-one million, one hundred twenty-nine", and thus it is an aban number.