102505250 has 32 divisors (see below), whose sum is σ = 200244096. Its totient is φ = 39217200.

The previous prime is 102505241. The next prime is 102505301. The reversal of 102505250 is 52505201.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3164 + ... + 14663.

It is an arithmetic number, because the mean of its divisors is an integer number (6257628).

Almost surely, 2^102505250 is an apocalyptic number.

102505250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102505250 is a deficient number, since it is larger than the sum of its proper divisors (97738846).

102505250 is a wasteful number, since it uses less digits than its factorization.

102505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17867 (or 17857 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 102505250 is about 10124.4876413575. The cubic root of 102505250 is about 468.0030711806.

The spelling of 102505250 in words is "one hundred two million, five hundred five thousand, two hundred fifty".