105120025 has 12 divisors (see below), whose sum is σ = 130501692. Its totient is φ = 83997440.

The previous prime is 105120013. The next prime is 105120107. The reversal of 105120025 is 520021501.

105120025 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 6 ways, for example, as 16232841 + 88887184 = 4029^2 + 9428^2 .

It is not a de Polignac number, because 105120025 - 2¹⁷ = 104988953 is a prime.

It is a super-2 number, since 2×105120025² = 22100439312001250, 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 = 105119990 and 105120008.

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, 25509 + ... + 29341.

It is an arithmetic number, because the mean of its divisors is an integer number (10875141).

Almost surely, 2^105120025 is an apocalyptic number.

It is an amenable number.

105120025 is a deficient number, since it is larger than the sum of its proper divisors (25381667).

105120025 is a wasteful number, since it uses less digits than its factorization.

105120025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 105120025 is about 10252.8057135596. The cubic root of 105120025 is about 471.9490886986.

Adding to 105120025 its reverse (520021501), we get a palindrome (625141526).

The spelling of 105120025 in words is "one hundred five million, one hundred twenty thousand, twenty-five".