2120525 has 18 divisors (see below), whose sum is σ = 2894346. Its totient is φ = 1540000.

The previous prime is 2120513. The next prime is 2120537. The reversal of 2120525 is 5250212.

It is an interprime number because it is at equal distance from previous prime (2120513) and next prime (2120537).

It can be written as a sum of positive squares in 3 ways, for example, as 407044 + 1713481 = 638^2 + 1309^2 .

It is not a de Polignac number, because 2120525 - 2⁸ = 2120269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2675 + ... + 3375.

It is an arithmetic number, because the mean of its divisors is an integer number (160797).

2^2120525 is an apocalyptic number.

2120525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120525 is a deficient number, since it is larger than the sum of its proper divisors (773821).

2120525 is a wasteful number, since it uses less digits than its factorization.

2120525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2120525 is about 1456.2022524361. The cubic root of 2120525 is about 128.4737691668.

Adding to 2120525 its reverse (5250212), we get a palindrome (7370737).

The spelling of 2120525 in words is "two million, one hundred twenty thousand, five hundred twenty-five".