3621425 has 12 divisors (see below), whose sum is σ = 4755276. Its totient is φ = 2726400.

The previous prime is 3621403. The next prime is 3621461. The reversal of 3621425 is 5241263.

It can be written as a sum of positive squares in 6 ways, for example, as 16 + 3621409 = 4^2 + 1903^2 .

It is not a de Polignac number, because 3621425 - 2¹⁰ = 3620401 is a prime.

It is a super-2 number, since 2×3621425² = 26229438061250, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹³ + 6³ + 2⁵ + 1 + 4⁸ + 2¹³ + 5⁹ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3621425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3836 + ... + 4685.

It is an arithmetic number, because the mean of its divisors is an integer number (396273).

Almost surely, 2^3621425 is an apocalyptic number.

It is an amenable number.

3621425 is a deficient number, since it is larger than the sum of its proper divisors (1133851).

3621425 is a wasteful number, since it uses less digits than its factorization.

3621425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8548 (or 8543 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 3621425 is about 1903.0042038840. The cubic root of 3621425 is about 153.5653256737.

Adding to 3621425 its reverse (5241263), we get a palindrome (8862688).

The spelling of 3621425 in words is "three million, six hundred twenty-one thousand, four hundred twenty-five".