2126818425 has 24 divisors (see below), whose sum is σ = 3534773760. Its totient is φ = 1128356800.

The previous prime is 2126818391. The next prime is 2126818451. The reversal of 2126818425 is 5248186212.

It is a happy number.

It is not a de Polignac number, because 2126818425 - 2⁶ = 2126818361 is a prime.

It is a super-3 number, since 3×2126818425³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59910 + ... + 88559.

It is an arithmetic number, because the mean of its divisors is an integer number (147282240).

Almost surely, 2^2126818425 is an apocalyptic number.

2126818425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2126818425 is a deficient number, since it is larger than the sum of its proper divisors (1407955335).

2126818425 is a wasteful number, since it uses less digits than its factorization.

2126818425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148673 (or 148668 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 2126818425 is about 46117.4416571431. The cubic root of 2126818425 is about 1286.0074109882.

It can be divided in two parts, 21268 and 18425, that added together give a palindrome (39693).

The spelling of 2126818425 in words is "two billion, one hundred twenty-six million, eight hundred eighteen thousand, four hundred twenty-five".