1025112125 has 16 divisors (see below), whose sum is σ = 1292022576. Its totient is φ = 811960000.

The previous prime is 1025112119. The next prime is 1025112133. The reversal of 1025112125 is 5212115201.

It can be written as a sum of positive squares in 8 ways, for example, as 65723449 + 959388676 = 8107^2 + 30974^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1025112125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025112097 and 1025112106.

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, 27974 + ... + 53223.

It is an arithmetic number, because the mean of its divisors is an integer number (80751411).

Almost surely, 2^1025112125 is an apocalyptic number.

It is an amenable number.

1025112125 is a deficient number, since it is larger than the sum of its proper divisors (266910451).

1025112125 is an equidigital number, since it uses as much as digits as its factorization.

1025112125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81313 (or 81303 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1025112125 is about 32017.3722375838. The cubic root of 1025112125 is about 1008.3016010474.

Adding to 1025112125 its reverse (5212115201), we get a palindrome (6237227326).

The spelling of 1025112125 in words is "one billion, twenty-five million, one hundred twelve thousand, one hundred twenty-five".