16251505250 has 32 divisors (see below), whose sum is σ = 30458718576. Its totient is φ = 6492931200.

The previous prime is 16251505189. The next prime is 16251505267. The reversal of 16251505250 is 5250515261.

It can be written as a sum of positive squares in 8 ways, for example, as 609250489 + 15642254761 = 24683^2 + 125069^2 .

It is a super-2 number, since 2×16251505250² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176324 + ... + 252176.

Almost surely, 2^16251505250 is an apocalyptic number.

16251505250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16251505250 is a deficient number, since it is larger than the sum of its proper divisors (14207213326).

16251505250 is an equidigital number, since it uses as much as digits as its factorization.

16251505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76727 (or 76717 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 16251505250 in words is "sixteen billion, two hundred fifty-one million, five hundred five thousand, two hundred fifty".