26163225 has 81 divisors (see below), whose sum is σ = 53223807. Its totient is φ = 12276000.

The previous prime is 26163223. The next prime is 26163239. The reversal of 26163225 is 52236162.

The square root of 26163225 is 5115.

It is a perfect power (a square), and thus also a powerful number.

26163225 is a `hidden beast` number, since 2 + 6 + 1 + 632 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9418761 + 16744464 = 3069^2 + 4092^2 .

It is not a de Polignac number, because 26163225 - 2¹ = 26163223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26163223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 843960 + ... + 843990.

Almost surely, 2^26163225 is an apocalyptic number.

26163225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26163225 is the 5115-th square number.

26163225 is the 2558-th centered octagonal number.

It is an amenable number.

26163225 is an abundant number, since it is smaller than the sum of its proper divisors (27060582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26163225 is a wasteful number, since it uses less digits than its factorization.

26163225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 50 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The cubic root of 26163225 is about 296.8682543250.

Adding to 26163225 its reverse (52236162), we get a palindrome (78399387).

The spelling of 26163225 in words is "twenty-six million, one hundred sixty-three thousand, two hundred twenty-five".