4311225 has 30 divisors (see below), whose sum is σ = 7989630. Its totient is φ = 2298240.

The previous prime is 4311221. The next prime is 4311247. The reversal of 4311225 is 5221134.

It can be written as a sum of positive squares in 3 ways, for example, as 63504 + 4247721 = 252^2 + 2061^2 .

It is not a de Polignac number, because 4311225 - 2² = 4311221 is a prime.

It is a super-2 number, since 2×4311225² = 37173322001250, which contains 22 as substring.

4311225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4311198 and 4311207.

It is not an unprimeable number, because it can be changed into a prime (4311221) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 961 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (266321).

Almost surely, 2^4311225 is an apocalyptic number.

4311225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4311225 is a deficient number, since it is larger than the sum of its proper divisors (3678405).

4311225 is a wasteful number, since it uses less digits than its factorization.

4311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2137 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 4311225 is about 2076.3489591107. The cubic root of 4311225 is about 162.7547090315.

Adding to 4311225 its reverse (5221134), we get a palindrome (9532359).

Subtracting 4311225 from its reverse (5221134), we obtain a palindrome (909909).

The spelling of 4311225 in words is "four million, three hundred eleven thousand, two hundred twenty-five".