25001525125 has 8 divisors (see below), whose sum is σ = 31201903512. Its totient is φ = 20001220000.

The previous prime is 25001525123. The next prime is 25001525173. The reversal of 25001525125 is 52152510052.

It can be written as a sum of positive squares in 4 ways, for example, as 2778765796 + 22222759329 = 52714^2 + 149073^2 .

It is not a de Polignac number, because 25001525125 - 2¹ = 25001525123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25001525093 and 25001525102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25001525123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100005976 + ... + 100006225.

It is an arithmetic number, because the mean of its divisors is an integer number (3900237939).

Almost surely, 2^25001525125 is an apocalyptic number.

25001525125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25001525125 is a deficient number, since it is larger than the sum of its proper divisors (6200378387).

25001525125 is an equidigital number, since it uses as much as digits as its factorization.

25001525125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200012216 (or 200012206 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 25001525125 in words is "twenty-five billion, one million, five hundred twenty-five thousand, one hundred twenty-five".