2130925 has 6 divisors (see below), whose sum is σ = 2642378. Its totient is φ = 1704720.

The previous prime is 2130917. The next prime is 2130929. The reversal of 2130925 is 5290312.

It can be written as a sum of positive squares in 3 ways, for example, as 243049 + 1887876 = 493^2 + 1374^2 .

It is not a de Polignac number, because 2130925 - 2³ = 2130917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2130896 and 2130905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42594 + ... + 42643.

2^2130925 is an apocalyptic number.

2130925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2130925 is a deficient number, since it is larger than the sum of its proper divisors (511453).

2130925 is an equidigital number, since it uses as much as digits as its factorization.

2130925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85247 (or 85242 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2130925 is about 1459.7688173132. The cubic root of 2130925 is about 128.6834576182.

The spelling of 2130925 in words is "two million, one hundred thirty thousand, nine hundred twenty-five".