1431225 has 18 divisors (see below), whose sum is σ = 2563886. Its totient is φ = 763200.

The previous prime is 1431223. The next prime is 1431253. The reversal of 1431225 is 5221341.

It can be written as a sum of positive squares in 3 ways, for example, as 19881 + 1411344 = 141^2 + 1188^2 .

It is not a de Polignac number, because 1431225 - 2¹ = 1431223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1431198 and 1431207.

It is not an unprimeable number, because it can be changed into a prime (1431223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2956 + ... + 3405.

2^1431225 is an apocalyptic number.

1431225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1431225 is a deficient number, since it is larger than the sum of its proper divisors (1132661).

1431225 is a wasteful number, since it uses less digits than its factorization.

1431225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6369 counting only the distinct ones).

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

The square root of 1431225 is about 1196.3381628954. The cubic root of 1431225 is about 112.6944784268.

Adding to 1431225 its reverse (5221341), we get a palindrome (6652566).

The spelling of 1431225 in words is "one million, four hundred thirty-one thousand, two hundred twenty-five".