1800225907 has 2 divisors, whose sum is σ = 1800225908. Its totient is φ = 1800225906.

The previous prime is 1800225853. The next prime is 1800225943. The reversal of 1800225907 is 7095220081.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1800225907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1800225967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900112953 + 900112954.

It is an arithmetic number, because the mean of its divisors is an integer number (900112954).

Almost surely, 2^1800225907 is an apocalyptic number.

1800225907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800225907 is an equidigital number, since it uses as much as digits as its factorization.

1800225907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1800225907 is about 42429.0691271916. The cubic root of 1800225907 is about 1216.4912863195.

Adding to 1800225907 its reverse (7095220081), we get a palindrome (8895445988).

The spelling of 1800225907 in words is "one billion, eight hundred million, two hundred twenty-five thousand, nine hundred seven".