1651304225 has 12 divisors (see below), whose sum is σ = 2118225660. Its totient is φ = 1275489600.

The previous prime is 1651304219. The next prime is 1651304257. The reversal of 1651304225 is 5224031561.

It can be written as a sum of positive squares in 6 ways, for example, as 334194961 + 1317109264 = 18281^2 + 36292^2 .

It is not a de Polignac number, because 1651304225 - 2¹⁶ = 1651238689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138106 + ... + 1139555.

It is an arithmetic number, because the mean of its divisors is an integer number (176518805).

Almost surely, 2^1651304225 is an apocalyptic number.

It is an amenable number.

1651304225 is a deficient number, since it is larger than the sum of its proper divisors (466921435).

1651304225 is a wasteful number, since it uses less digits than its factorization.

1651304225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277700 (or 2277695 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1651304225 is about 40636.2427520065. The cubic root of 1651304225 is about 1181.9770135236.

Adding to 1651304225 its reverse (5224031561), we get a palindrome (6875335786).

The spelling of 1651304225 in words is "one billion, six hundred fifty-one million, three hundred four thousand, two hundred twenty-five".