105242242025 has 6 divisors (see below), whose sum is σ = 130500380142. Its totient is φ = 84193793600.

The previous prime is 105242242013. The next prime is 105242242067. The reversal of 105242242025 is 520242242501.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 31460471641 + 73781770384 = 177371^2 + 271628^2 .

It is not a de Polignac number, because 105242242025 - 2⁴ = 105242242009 is a prime.

It is a super-2 number, since 2×105242242025² (a number of 23 digits) 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 5 ways as a sum of consecutive naturals, for example, 2104844816 + ... + 2104844865.

It is an arithmetic number, because the mean of its divisors is an integer number (21750063357).

Almost surely, 2^105242242025 is an apocalyptic number.

It is an amenable number.

105242242025 is a deficient number, since it is larger than the sum of its proper divisors (25258138117).

105242242025 is an equidigital number, since it uses as much as digits as its factorization.

105242242025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209689691 (or 4209689686 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 105242242025 its reverse (520242242501), we get a palindrome (625484484526).

The spelling of 105242242025 in words is "one hundred five billion, two hundred forty-two million, two hundred forty-two thousand, twenty-five".