3742225 has 6 divisors (see below), whose sum is σ = 4640390. Its totient is φ = 2993760.

The previous prime is 3742223. The next prime is 3742229. The reversal of 3742225 is 5222473.

It can be written as a sum of positive squares in 3 ways, for example, as 51984 + 3690241 = 228^2 + 1921^2 .

It is not a de Polignac number, because 3742225 - 2¹ = 3742223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 149689 = 3742225 / (3 + 7 + 4 + 2 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 3742225.

It is not an unprimeable number, because it can be changed into a prime (3742223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74820 + ... + 74869.

Almost surely, 2^3742225 is an apocalyptic number.

It is an amenable number.

3742225 is a deficient number, since it is larger than the sum of its proper divisors (898165).

3742225 is a wasteful number, since it uses less digits than its factorization.

3742225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149699 (or 149694 counting only the distinct ones).

The product of its digits is 3360, while the sum is 25.

The square root of 3742225 is about 1934.4831351035. The cubic root of 3742225 is about 155.2541788605.

Adding to 3742225 its reverse (5222473), we get a palindrome (8964698).

The spelling of 3742225 in words is "three million, seven hundred forty-two thousand, two hundred twenty-five".