1550425 has 6 divisors (see below), whose sum is σ = 1922558. Its totient is φ = 1240320.

The previous prime is 1550413. The next prime is 1550431. The reversal of 1550425 is 5240551.

1550425 = 151² + 152² + ... + 200².

It can be written as a sum of positive squares in 3 ways, for example, as 534361 + 1016064 = 731^2 + 1008^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1550425 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1550396 and 1550405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30984 + ... + 31033.

2^1550425 is an apocalyptic number.

It is an amenable number.

1550425 is a deficient number, since it is larger than the sum of its proper divisors (372133).

1550425 is an equidigital number, since it uses as much as digits as its factorization.

1550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62027 (or 62022 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1550425 is about 1245.1606322077. The cubic root of 1550425 is about 115.7400291828.

Adding to 1550425 its reverse (5240551), we get a palindrome (6790976).

The spelling of 1550425 in words is "one million, five hundred fifty thousand, four hundred twenty-five".