2645725 has 6 divisors (see below), whose sum is σ = 3280730. Its totient is φ = 2116560.

The previous prime is 2645723. The next prime is 2645743. The reversal of 2645725 is 5275462.

It can be written as a sum of positive squares in 3 ways, for example, as 1849 + 2643876 = 43^2 + 1626^2 .

It is not a de Polignac number, because 2645725 - 2¹ = 2645723 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52890 + ... + 52939.

2^2645725 is an apocalyptic number.

2645725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2645725 is a deficient number, since it is larger than the sum of its proper divisors (635005).

2645725 is a wasteful number, since it uses less digits than its factorization.

2645725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105839 (or 105834 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 2645725 is about 1626.5684738123. The cubic root of 2645725 is about 138.3082969480.

The spelling of 2645725 in words is "two million, six hundred forty-five thousand, seven hundred twenty-five".