2025139 has 4 divisors (see below), whose sum is σ = 2058400. Its totient is φ = 1991880.

The previous prime is 2025131. The next prime is 2025169. The reversal of 2025139 is 9315202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2025139 - 2³ = 2025131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2025131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16539 + ... + 16660.

It is an arithmetic number, because the mean of its divisors is an integer number (514600).

2^2025139 is an apocalyptic number.

2025139 is a deficient number, since it is larger than the sum of its proper divisors (33261).

2025139 is an equidigital number, since it uses as much as digits as its factorization.

2025139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33260.

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

The square root of 2025139 is about 1423.0737858593. The cubic root of 2025139 is about 126.5177944732.

The spelling of 2025139 in words is "two million, twenty-five thousand, one hundred thirty-nine".