2120425 has 12 divisors (see below), whose sum is σ = 2661660. Its totient is φ = 1675520.

The previous prime is 2120423. The next prime is 2120429. The reversal of 2120425 is 5240212.

It can be written as a sum of positive squares in 6 ways, for example, as 249001 + 1871424 = 499^2 + 1368^2 .

It is not a de Polignac number, because 2120425 - 2¹ = 2120423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120399 and 2120408.

It is not an unprimeable number, because it can be changed into a prime (2120423) 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, 1749 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (221805).

2^2120425 is an apocalyptic number.

2120425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120425 is a deficient number, since it is larger than the sum of its proper divisors (541235).

2120425 is an equidigital number, since it uses as much as digits as its factorization.

2120425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2120425 is about 1456.1679161415. The cubic root of 2120425 is about 128.4717496073.

Adding to 2120425 its reverse (5240212), we get a palindrome (7360637).

The spelling of 2120425 in words is "two million, one hundred twenty thousand, four hundred twenty-five".