2122425 has 18 divisors (see below), whose sum is σ = 3801902. Its totient is φ = 1131840.

The previous prime is 2122409. The next prime is 2122427. The reversal of 2122425 is 5242212.

It can be written as a sum of positive squares in 3 ways, for example, as 251001 + 1871424 = 501^2 + 1368^2 .

It is not a de Polignac number, because 2122425 - 2⁴ = 2122409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122398 and 2122407.

It is not an unprimeable number, because it can be changed into a prime (2122427) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4492 + ... + 4941.

2^2122425 is an apocalyptic number.

2122425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2122425 is a deficient number, since it is larger than the sum of its proper divisors (1679477).

2122425 is a wasteful number, since it uses less digits than its factorization.

2122425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449 (or 9441 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 2122425 is about 1456.8544882726. The cubic root of 2122425 is about 128.5121287385.

Adding to 2122425 its reverse (5242212), we get a palindrome (7364637).

The spelling of 2122425 in words is "two million, one hundred twenty-two thousand, four hundred twenty-five".