2126253125 has 12 divisors (see below), whose sum is σ = 2657650212. Its totient is φ = 1701000000.

The previous prime is 2126253113. The next prime is 2126253127. The reversal of 2126253125 is 5213526212.

It can be written as a sum of positive squares in 6 ways, for example, as 1493126881 + 633126244 = 38641^2 + 25162^2 .

It is not a de Polignac number, because 2126253125 - 2⁴ = 2126253109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126253127) 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, 337076 + ... + 343325.

It is an arithmetic number, because the mean of its divisors is an integer number (221470851).

Almost surely, 2^2126253125 is an apocalyptic number.

2126253125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2126253125 is a deficient number, since it is larger than the sum of its proper divisors (531397087).

2126253125 is an frugal number, since it uses more digits than its factorization.

2126253125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680426 (or 680406 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 2126253125 is about 46111.3123322249. The cubic root of 2126253125 is about 1285.8934623158.

Adding to 2126253125 its reverse (5213526212), we get a palindrome (7339779337).

The spelling of 2126253125 in words is "two billion, one hundred twenty-six million, two hundred fifty-three thousand, one hundred twenty-five".