2122425261 has 80 divisors (see below), whose sum is σ = 3655415808. Its totient is φ = 1215194400.

The previous prime is 2122425259. The next prime is 2122425293. The reversal of 2122425261 is 1625242212.

2122425261 is a `hidden beast` number, since 212 + 2 + 425 + 26 + 1 = 666.

It is not a de Polignac number, because 2122425261 - 2¹ = 2122425259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122425241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1186810 + ... + 1188596.

Almost surely, 2^2122425261 is an apocalyptic number.

It is an amenable number.

2122425261 is a deficient number, since it is larger than the sum of its proper divisors (1532990547).

2122425261 is a wasteful number, since it uses less digits than its factorization.

2122425261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884 (or 1875 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 2122425261 is about 46069.7868564637. The cubic root of 2122425261 is about 1285.1213400636.

Adding to 2122425261 its reverse (1625242212), we get a palindrome (3747667473).

The spelling of 2122425261 in words is "two billion, one hundred twenty-two million, four hundred twenty-five thousand, two hundred sixty-one".