25000000125 has 16 divisors (see below), whose sum is σ = 41600000832. Its totient is φ = 13333333200.

The previous prime is 25000000111. The next prime is 25000000153. The reversal of 25000000125 is 52100000052.

It is not a de Polignac number, because 25000000125 - 2¹⁷ = 24999869053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33332959 + ... + 33333708.

It is an arithmetic number, because the mean of its divisors is an integer number (2600000052).

Almost surely, 2^25000000125 is an apocalyptic number.

25000000125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25000000125 is a deficient number, since it is larger than the sum of its proper divisors (16600000707).

25000000125 is an equidigital number, since it uses as much as digits as its factorization.

25000000125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66666685 (or 66666675 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

Adding to 25000000125 its reverse (52100000052), we get a palindrome (77100000177).

The spelling of 25000000125 in words is "twenty-five billion, one hundred twenty-five", and thus it is an aban number.