2125081225 has 12 divisors (see below), whose sum is σ = 2647595920. Its totient is φ = 1692003600.

The previous prime is 2125081183. The next prime is 2125081229. The reversal of 2125081225 is 5221805212.

It is a de Polignac number, because none of the positive numbers 2^k-2125081225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2125081193 and 2125081202.

It is not an unprimeable number, because it can be changed into a prime (2125081229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196155 + ... + 206704.

Almost surely, 2^2125081225 is an apocalyptic number.

2125081225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2125081225 is a deficient number, since it is larger than the sum of its proper divisors (522514695).

2125081225 is a wasteful number, since it uses less digits than its factorization.

2125081225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403080 (or 403075 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 2125081225 is about 46098.6032868676. The cubic root of 2125081225 is about 1285.6571756967.

Adding to 2125081225 its reverse (5221805212), we get a palindrome (7346886437).

The spelling of 2125081225 in words is "two billion, one hundred twenty-five million, eighty-one thousand, two hundred twenty-five".