103666525 has 6 divisors (see below), whose sum is σ = 128546522. Its totient is φ = 82933200.

The previous prime is 103666517. The next prime is 103666529. The reversal of 103666525 is 525666301.

It can be written as a sum of positive squares in 3 ways, for example, as 23707161 + 79959364 = 4869^2 + 8942^2 .

It is not a de Polignac number, because 103666525 - 2³ = 103666517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103666529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2073306 + ... + 2073355.

Almost surely, 2^103666525 is an apocalyptic number.

It is an amenable number.

103666525 is a deficient number, since it is larger than the sum of its proper divisors (24879997).

103666525 is an equidigital number, since it uses as much as digits as its factorization.

103666525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146671 (or 4146666 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 103666525 is about 10181.6759425941. The cubic root of 103666525 is about 469.7637638820.

The spelling of 103666525 in words is "one hundred three million, six hundred sixty-six thousand, five hundred twenty-five".