1001002250 has 16 divisors (see below), whose sum is σ = 1873876680. Its totient is φ = 400400800.

The previous prime is 1001002243. The next prime is 1001002259. The reversal of 1001002250 is 522001001.

It can be written as a sum of positive squares in 4 ways, for example, as 477553609 + 523448641 = 21853^2 + 22879^2 .

It is not an unprimeable number, because it can be changed into a prime (1001002259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001755 + ... + 2002254.

Almost surely, 2^1001002250 is an apocalyptic number.

1001002250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001002250 is a deficient number, since it is larger than the sum of its proper divisors (872874430).

1001002250 is an equidigital number, since it uses as much as digits as its factorization.

1001002250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004026 (or 4004016 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1001002250 is about 31638.6195969420. The cubic root of 1001002250 is about 1000.3339717838. Note that the first 3 decimals are identical.

Adding to 1001002250 its reverse (522001001), we get a palindrome (1523003251).

The spelling of 1001002250 in words is "one billion, one million, two thousand, two hundred fifty".