2126601225 has 54 divisors (see below), whose sum is σ = 4430876190. Its totient is φ = 972155520.

The previous prime is 2126601199. The next prime is 2126601283. The reversal of 2126601225 is 5221066212.

It can be written as a sum of positive squares in 3 ways, for example, as 76685049 + 2049916176 = 8757^2 + 45276^2 .

It is not a de Polignac number, because 2126601225 - 2¹⁸ = 2126339081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 85420 + ... + 107469.

Almost surely, 2^2126601225 is an apocalyptic number.

2126601225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2126601225 is an abundant number, since it is smaller than the sum of its proper divisors (2304274965).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2126601225 is a wasteful number, since it uses less digits than its factorization.

2126601225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192919 (or 192904 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2126601225 is about 46115.0867395910. The cubic root of 2126601225 is about 1285.9636319307.

Adding to 2126601225 its reverse (5221066212), we get a palindrome (7347667437).

It can be divided in two parts, 2126 and 601225, that added together give a triangular number (603351 = T₁₀₉₈).

The spelling of 2126601225 in words is "two billion, one hundred twenty-six million, six hundred one thousand, two hundred twenty-five".