100605725 has 12 divisors (see below), whose sum is σ = 136092480. Its totient is φ = 73167600.

The previous prime is 100605721. The next prime is 100605737. The reversal of 100605725 is 527506001.

It is not a de Polignac number, because 100605725 - 2² = 100605721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100605694 and 100605703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100605721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182645 + ... + 183194.

It is an arithmetic number, because the mean of its divisors is an integer number (11341040).

Almost surely, 2^100605725 is an apocalyptic number.

It is an amenable number.

100605725 is a deficient number, since it is larger than the sum of its proper divisors (35486755).

100605725 is a wasteful number, since it uses less digits than its factorization.

100605725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365860 (or 365855 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 100605725 is about 10030.2405255308. The cubic root of 100605725 is about 465.0941729334.

The spelling of 100605725 in words is "one hundred million, six hundred five thousand, seven hundred twenty-five".