1650013225 has 48 divisors (see below), whose sum is σ = 2441093760. Its totient is φ = 1082764800.

The previous prime is 1650013207. The next prime is 1650013237. The reversal of 1650013225 is 5223100561.

It is not a de Polignac number, because 1650013225 - 2⁵ = 1650013193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1650013225.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 378106 + ... + 382444.

It is an arithmetic number, because the mean of its divisors is an integer number (50856120).

Almost surely, 2^1650013225 is an apocalyptic number.

It is an amenable number.

1650013225 is a deficient number, since it is larger than the sum of its proper divisors (791080535).

1650013225 is a wasteful number, since it uses less digits than its factorization.

1650013225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1650013225 is about 40620.3548113504. The cubic root of 1650013225 is about 1181.6689075357.

Adding to 1650013225 its reverse (5223100561), we get a palindrome (6873113786).

The spelling of 1650013225 in words is "one billion, six hundred fifty million, thirteen thousand, two hundred twenty-five".