105198025 has 12 divisors (see below), whose sum is σ = 131134464. Its totient is φ = 83714000.

The previous prime is 105198011. The next prime is 105198047. The reversal of 105198025 is 520891501.

It is a de Polignac number, because none of the positive numbers 2^k-105198025 is a prime.

It is a super-2 number, since 2×105198025² = 22133248927801250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 6241 + ... + 15790.

It is an arithmetic number, because the mean of its divisors is an integer number (10927872).

Almost surely, 2^105198025 is an apocalyptic number.

It is an amenable number.

105198025 is a deficient number, since it is larger than the sum of its proper divisors (25936439).

105198025 is a wasteful number, since it uses less digits than its factorization.

105198025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22232 (or 22227 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 105198025 is about 10256.6088450326. The cubic root of 105198025 is about 472.0657899891.

The spelling of 105198025 in words is "one hundred five million, one hundred ninety-eight thousand, twenty-five".