109860000025 has 6 divisors (see below), whose sum is σ = 136226400062. Its totient is φ = 87888000000.

The previous prime is 109859999989. The next prime is 109860000049. The reversal of 109860000025 is 520000068901.

109860000025 = 234371² + 234372².

It can be written as a sum of positive squares in 3 ways, for example, as 25399434384 + 84460565641 = 159372^2 + 290621^2 .

It is not a de Polignac number, because 109860000025 - 2¹¹ = 109859997977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2197199976 + ... + 2197200025.

Almost surely, 2^109860000025 is an apocalyptic number.

109860000025 is the 234372-nd centered square number.

It is an amenable number.

109860000025 is a deficient number, since it is larger than the sum of its proper divisors (26366400037).

109860000025 is an equidigital number, since it uses as much as digits as its factorization.

109860000025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394400011 (or 4394400006 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 109860000025 its reverse (520000068901), we get a palindrome (629860068926).

The spelling of 109860000025 in words is "one hundred nine billion, eight hundred sixty million, twenty-five", and thus it is an aban number.