105515425 has 6 divisors (see below), whose sum is σ = 130839158. Its totient is φ = 84412320.

The previous prime is 105515411. The next prime is 105515429. The reversal of 105515425 is 524515501.

It can be written as a sum of positive squares in 3 ways, for example, as 1658944 + 103856481 = 1288^2 + 10191^2 .

It is a de Polignac number, because none of the positive numbers 2^k-105515425 is a prime.

It is a super-2 number, since 2×105515425² = 22267009825861250, 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 = 105515393 and 105515402.

It is not an unprimeable number, because it can be changed into a prime (105515429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2110284 + ... + 2110333.

Almost surely, 2^105515425 is an apocalyptic number.

It is an amenable number.

105515425 is a deficient number, since it is larger than the sum of its proper divisors (25323733).

105515425 is an equidigital number, since it uses as much as digits as its factorization.

105515425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220627 (or 4220622 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 105515425 is about 10272.0701418945. The cubic root of 105515425 is about 472.5400803976.

The spelling of 105515425 in words is "one hundred five million, five hundred fifteen thousand, four hundred twenty-five".