105312225 has 12 divisors (see below), whose sum is σ = 174116336. Its totient is φ = 56166480.

The previous prime is 105312217. The next prime is 105312283. The reversal of 105312225 is 522213501.

It is not a de Polignac number, because 105312225 - 2³ = 105312217 is a prime.

It is a super-2 number, since 2×105312225² = 22181329468901250, which contains 22 as substring.

It is a Duffinian number.

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, 702007 + ... + 702156.

Almost surely, 2^105312225 is an apocalyptic number.

105312225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105312225 is a deficient number, since it is larger than the sum of its proper divisors (68804111).

105312225 is a wasteful number, since it uses less digits than its factorization.

105312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404176 (or 1404171 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 105312225 is about 10262.1744771759. The cubic root of 105312225 is about 472.2365486362.

Adding to 105312225 its reverse (522213501), we get a palindrome (627525726).

The spelling of 105312225 in words is "one hundred five million, three hundred twelve thousand, two hundred twenty-five".