4151225 has 24 divisors (see below), whose sum is σ = 5671512. Its totient is φ = 2995200.

The previous prime is 4151219. The next prime is 4151239. The reversal of 4151225 is 5221514.

It can be written as a sum of positive squares in 12 ways, for example, as 896809 + 3254416 = 947^2 + 1804^2 .

It is not a de Polignac number, because 4151225 - 2⁸ = 4150969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4151197 and 4151206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17105 + ... + 17345.

It is an arithmetic number, because the mean of its divisors is an integer number (236313).

Almost surely, 2^4151225 is an apocalyptic number.

It is an amenable number.

4151225 is a deficient number, since it is larger than the sum of its proper divisors (1520287).

4151225 is a wasteful number, since it uses less digits than its factorization.

4151225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 312 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 4151225 is about 2037.4555209869. The cubic root of 4151225 is about 160.7158678269.

Adding to 4151225 its reverse (5221514), we get a palindrome (9372739).

It can be divided in two parts, 41 and 51225, that multiplied together give a triangular number (2100225 = T₂₀₄₉).

The spelling of 4151225 in words is "four million, one hundred fifty-one thousand, two hundred twenty-five".