3622725 has 30 divisors (see below), whose sum is σ = 6714290. Its totient is φ = 1931040.

The previous prime is 3622721. The next prime is 3622727. The reversal of 3622725 is 5272263.

It can be written as a sum of positive squares in 3 ways, for example, as 910116 + 2712609 = 954^2 + 1647^2 .

It is not a de Polignac number, because 3622725 - 2² = 3622721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 3² + 6⁶ + 2¹⁷ + 2¹⁹ + 7⁷ + 2²¹ + 5 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622721) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1131 + ... + 2919.

Almost surely, 2^3622725 is an apocalyptic number.

It is an amenable number.

3622725 is a deficient number, since it is larger than the sum of its proper divisors (3091565).

3622725 is a wasteful number, since it uses less digits than its factorization.

3622725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811 (or 1797 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 3622725 is about 1903.3457384301. The cubic root of 3622725 is about 153.5836988316.

Adding to 3622725 its reverse (5272263), we get a palindrome (8894988).

The spelling of 3622725 in words is "three million, six hundred twenty-two thousand, seven hundred twenty-five".