3861225 has 27 divisors (see below), whose sum is σ = 6969079. Its totient is φ = 2043600.

The previous prime is 3861223. The next prime is 3861233. The reversal of 3861225 is 5221683.

The square root of 3861225 is 1965.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1390041 + 2471184 = 1179^2 + 1572^2 .

It is not a de Polignac number, because 3861225 - 2¹ = 3861223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3861223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 29410 + ... + 29540.

Almost surely, 2^3861225 is an apocalyptic number.

3861225 is the 1965-th square number.

3861225 is the 983-rd centered octagonal number.

It is an amenable number.

3861225 is a deficient number, since it is larger than the sum of its proper divisors (3107854).

3861225 is a wasteful number, since it uses less digits than its factorization.

3861225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 139 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The cubic root of 3861225 is about 156.8826932837.

The spelling of 3861225 in words is "three million, eight hundred sixty-one thousand, two hundred twenty-five".