100689925 has 12 divisors (see below), whose sum is σ = 142692256. Its totient is φ = 69044400.

The previous prime is 100689923. The next prime is 100689937. The reversal of 100689925 is 529986001.

It is not a de Polignac number, because 100689925 - 2¹ = 100689923 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100689923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287511 + ... + 287860.

Almost surely, 2^100689925 is an apocalyptic number.

It is an amenable number.

100689925 is a deficient number, since it is larger than the sum of its proper divisors (42002331).

100689925 is an equidigital number, since it uses as much as digits as its factorization.

100689925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575388 (or 575383 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 100689925 is about 10034.4369548072. The cubic root of 100689925 is about 465.2238872528.

The spelling of 100689925 in words is "one hundred million, six hundred eighty-nine thousand, nine hundred twenty-five".