2125100145 has 16 divisors (see below), whose sum is σ = 3885897600. Its totient is φ = 971474304.

The previous prime is 2125100129. The next prime is 2125100149. The reversal of 2125100145 is 5410015212.

It is not a de Polignac number, because 2125100145 - 2⁴ = 2125100129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2125100149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10119420 + ... + 10119629.

It is an arithmetic number, because the mean of its divisors is an integer number (242868600).

Almost surely, 2^2125100145 is an apocalyptic number.

It is an amenable number.

2125100145 is a deficient number, since it is larger than the sum of its proper divisors (1760797455).

2125100145 is a wasteful number, since it uses less digits than its factorization.

2125100145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20239064.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2125100145 is about 46098.8084987020. The cubic root of 2125100145 is about 1285.6609911683.

Adding to 2125100145 its reverse (5410015212), we get a palindrome (7535115357).

The spelling of 2125100145 in words is "two billion, one hundred twenty-five million, one hundred thousand, one hundred forty-five".