26171225 has 6 divisors (see below), whose sum is σ = 32452350. Its totient is φ = 20936960.

The previous prime is 26171213. The next prime is 26171231. The reversal of 26171225 is 52217162.

It can be written as a sum of positive squares in 3 ways, for example, as 120409 + 26050816 = 347^2 + 5104^2 .

It is not a de Polignac number, because 26171225 - 2¹² = 26167129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26171194 and 26171203.

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, 523400 + ... + 523449.

It is an arithmetic number, because the mean of its divisors is an integer number (5408725).

Almost surely, 2^26171225 is an apocalyptic number.

26171225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26171225 is a deficient number, since it is larger than the sum of its proper divisors (6281125).

26171225 is a wasteful number, since it uses less digits than its factorization.

26171225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046859 (or 1046854 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 26171225 is about 5115.7819539148. The cubic root of 26171225 is about 296.8985093109.

Adding to 26171225 its reverse (52217162), we get a palindrome (78388387).

The spelling of 26171225 in words is "twenty-six million, one hundred seventy-one thousand, two hundred twenty-five".