2025645 has 8 divisors (see below), whose sum is σ = 3241056. Its totient is φ = 1080336.

The previous prime is 2025643. The next prime is 2025649. The reversal of 2025645 is 5465202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2025645 - 2¹ = 2025643 is a prime.

It is a super-3 number, since 3×2025645³ = 24935108585985633375, which contains 333 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2025641) 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 7 ways as a sum of consecutive naturals, for example, 67507 + ... + 67536.

It is an arithmetic number, because the mean of its divisors is an integer number (405132).

2^2025645 is an apocalyptic number.

It is an amenable number.

2025645 is a deficient number, since it is larger than the sum of its proper divisors (1215411).

2025645 is a wasteful number, since it uses less digits than its factorization.

2025645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135051.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2025645 is about 1423.2515589312. The cubic root of 2025645 is about 126.5283308155.

It can be divided in two parts, 20256 and 45, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 2025645 in words is "two million, twenty-five thousand, six hundred forty-five".