1650425 has 12 divisors (see below), whose sum is σ = 2339136. Its totient is φ = 1131600.

The previous prime is 1650413. The next prime is 1650427. The reversal of 1650425 is 5240561.

It is not a de Polignac number, because 1650425 - 2¹⁶ = 1584889 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1650425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650427) 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 11 ways as a sum of consecutive naturals, for example, 4541 + ... + 4890.

It is an arithmetic number, because the mean of its divisors is an integer number (194928).

2^1650425 is an apocalyptic number.

It is an amenable number.

1650425 is a deficient number, since it is larger than the sum of its proper divisors (688711).

1650425 is an equidigital number, since it uses as much as digits as its factorization.

1650425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448 (or 9443 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1650425 is about 1284.6886782408. The cubic root of 1650425 is about 118.1767197908.

Adding to 1650425 its reverse (5240561), we get a palindrome (6890986).

The spelling of 1650425 in words is "one million, six hundred fifty thousand, four hundred twenty-five".