2139225 has 24 divisors (see below), whose sum is σ = 3859872. Its totient is φ = 1036800.

The previous prime is 2139211. The next prime is 2139227. The reversal of 2139225 is 5229312.

It is not a de Polignac number, because 2139225 - 2⁹ = 2138713 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2139195 and 2139204.

It is not an unprimeable number, because it can be changed into a prime (2139227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 472 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (160828).

2^2139225 is an apocalyptic number.

2139225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2139225 is a deficient number, since it is larger than the sum of its proper divisors (1720647).

2139225 is a wasteful number, since it uses less digits than its factorization.

2139225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617 (or 2612 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 2139225 is about 1462.6089702993. The cubic root of 2139225 is about 128.8503161372.

The spelling of 2139225 in words is "two million, one hundred thirty-nine thousand, two hundred twenty-five".