3581425 has 6 divisors (see below), whose sum is σ = 4440998. Its totient is φ = 2865120.

The previous prime is 3581419. The next prime is 3581429. The reversal of 3581425 is 5241853.

It can be written as a sum of positive squares in 3 ways, for example, as 43264 + 3538161 = 208^2 + 1881^2 .

It is not a de Polignac number, because 3581425 - 2⁵ = 3581393 is a prime.

It is a Duffinian number.

3581425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3581393 and 3581402.

It is not an unprimeable number, because it can be changed into a prime (3581429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71604 + ... + 71653.

Almost surely, 2^3581425 is an apocalyptic number.

It is an amenable number.

3581425 is a deficient number, since it is larger than the sum of its proper divisors (859573).

3581425 is a wasteful number, since it uses less digits than its factorization.

3581425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143267 (or 143262 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 3581425 is about 1892.4653233283. The cubic root of 3581425 is about 152.9978355597.

The spelling of 3581425 in words is "three million, five hundred eighty-one thousand, four hundred twenty-five".