102251143250 has 64 divisors (see below), whose sum is σ = 196740666720. Its totient is φ = 39777408000.

The previous prime is 102251143249. The next prime is 102251143259. The reversal of 102251143250 is 52341152201.

It can be written as a sum of positive squares in 16 ways, for example, as 38149511761 + 64101631489 = 195319^2 + 253183^2 .

It is not an unprimeable number, because it can be changed into a prime (102251143259) 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 31 ways as a sum of consecutive naturals, for example, 1319582 + ... + 1394918.

Almost surely, 2^102251143250 is an apocalyptic number.

102251143250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102251143250 is a deficient number, since it is larger than the sum of its proper divisors (94489523470).

102251143250 is an equidigital number, since it uses as much as digits as its factorization.

102251143250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75504 (or 75494 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 102251143250 its reverse (52341152201), we get a palindrome (154592295451).

The spelling of 102251143250 in words is "one hundred two billion, two hundred fifty-one million, one hundred forty-three thousand, two hundred fifty".