105810025 has 12 divisors (see below), whose sum is σ = 132560092. Its totient is φ = 83773440.

The previous prime is 105810013. The next prime is 105810041. The reversal of 105810025 is 520018501.

It can be written as a sum of positive squares in 6 ways, for example, as 870489 + 104939536 = 933^2 + 10244^2 .

It is a de Polignac number, because none of the positive numbers 2^k-105810025 is a prime.

It is a super-2 number, since 2×105810025² = 22391522781001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105809978 and 105810005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19392 + ... + 24241.

Almost surely, 2^105810025 is an apocalyptic number.

It is an amenable number.

105810025 is a deficient number, since it is larger than the sum of its proper divisors (26750067).

105810025 is an equidigital number, since it uses as much as digits as its factorization.

105810025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43740 (or 43735 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 105810025 is about 10286.4000019443. The cubic root of 105810025 is about 472.9794504375.

Adding to 105810025 its reverse (520018501), we get a palindrome (625828526).

The spelling of 105810025 in words is "one hundred five million, eight hundred ten thousand, twenty-five".