3151225 has 24 divisors (see below), whose sum is σ = 4874688. Its totient is φ = 1963200.

The previous prime is 3151217. The next prime is 3151229. The reversal of 3151225 is 5221513.

It is not a de Polignac number, because 3151225 - 2³ = 3151217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3151229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1107 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (203112).

Almost surely, 2^3151225 is an apocalyptic number.

3151225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3151225 is a deficient number, since it is larger than the sum of its proper divisors (1723463).

3151225 is a wasteful number, since it uses less digits than its factorization.

3151225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1660 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 3151225 is about 1775.1690060386. The cubic root of 3151225 is about 146.6087207963.

Adding to 3151225 its reverse (5221513), we get a palindrome (8372738).

It can be divided in two parts, 315 and 1225, that added together give a triangular number (1540 = T₅₅).

The spelling of 3151225 in words is "three million, one hundred fifty-one thousand, two hundred twenty-five".