161126825 has 12 divisors (see below), whose sum is σ = 200052300. Its totient is φ = 128736960.

The previous prime is 161126789. The next prime is 161126827. The reversal of 161126825 is 528621161.

161126825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3297856 + 157828969 = 1816^2 + 12563^2 .

It is not a de Polignac number, because 161126825 - 2¹⁰ = 161125801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161126791 and 161126800.

It is not an unprimeable number, because it can be changed into a prime (161126827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18251 + ... + 25599.

It is an arithmetic number, because the mean of its divisors is an integer number (16671025).

Almost surely, 2^161126825 is an apocalyptic number.

It is an amenable number.

161126825 is a deficient number, since it is larger than the sum of its proper divisors (38925475).

161126825 is an equidigital number, since it uses as much as digits as its factorization.

161126825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236 (or 8231 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 161126825 is about 12693.5741617560. The cubic root of 161126825 is about 544.1549904848.

Adding to 161126825 its reverse (528621161), we get a palindrome (689747986).

The spelling of 161126825 in words is "one hundred sixty-one million, one hundred twenty-six thousand, eight hundred twenty-five".