630423250 has 16 divisors (see below), whose sum is σ = 1180152792. Its totient is φ = 252169200.

The previous prime is 630423217. The next prime is 630423251. The reversal of 630423250 is 52324036.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 246772681 + 383650569 = 15709^2 + 19587^2 .

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

It is not an unprimeable number, because it can be changed into a prime (630423251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260597 + ... + 1261096.

Almost surely, 2^630423250 is an apocalyptic number.

630423250 is a deficient number, since it is larger than the sum of its proper divisors (549729542).

630423250 is a wasteful number, since it uses less digits than its factorization.

630423250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521710 (or 2521700 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 630423250 is about 25108.2307222154. The cubic root of 630423250 is about 857.4538220252.

Adding to 630423250 its reverse (52324036), we get a palindrome (682747286).

The spelling of 630423250 in words is "six hundred thirty million, four hundred twenty-three thousand, two hundred fifty".