2252405 has 4 divisors (see below), whose sum is σ = 2702892. Its totient is φ = 1801920.

The previous prime is 2252399. The next prime is 2252407. The reversal of 2252405 is 5042522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 1999396 = 503^2 + 1414^2 .

It is not a de Polignac number, because 2252405 - 2⁴ = 2252389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252407) 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, 225236 + ... + 225245.

It is an arithmetic number, because the mean of its divisors is an integer number (675723).

2^2252405 is an apocalyptic number.

It is an amenable number.

2252405 is a deficient number, since it is larger than the sum of its proper divisors (450487).

2252405 is an equidigital number, since it uses as much as digits as its factorization.

2252405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450486.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2252405 is about 1500.8014525579. The cubic root of 2252405 is about 131.0837411082.

Adding to 2252405 its reverse (5042522), we get a palindrome (7294927).

The spelling of 2252405 in words is "two million, two hundred fifty-two thousand, four hundred five".