3861625 has 8 divisors (see below), whose sum is σ = 4819464. Its totient is φ = 3089200.

The previous prime is 3861607. The next prime is 3861659. The reversal of 3861625 is 5261683.

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 3579664 = 531^2 + 1892^2 .

It is not a de Polignac number, because 3861625 - 2⁵ = 3861593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15322 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (602433).

Almost surely, 2^3861625 is an apocalyptic number.

It is an amenable number.

3861625 is a deficient number, since it is larger than the sum of its proper divisors (957839).

3861625 is an equidigital number, since it uses as much as digits as its factorization.

3861625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30908 (or 30898 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 3861625 is about 1965.1017785346. The cubic root of 3861625 is about 156.8881104687. Note that the first 3 decimals are identical.

The spelling of 3861625 in words is "three million, eight hundred sixty-one thousand, six hundred twenty-five".