26402225 has 6 divisors (see below), whose sum is σ = 32738790. Its totient is φ = 21121760.

The previous prime is 26402213. The next prime is 26402227. The reversal of 26402225 is 52220462.

It can be written as a sum of positive squares in 3 ways, for example, as 13456 + 26388769 = 116^2 + 5137^2 .

It is not a de Polignac number, because 26402225 - 2⁶ = 26402161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26402225.

It is not an unprimeable number, because it can be changed into a prime (26402227) 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, 528020 + ... + 528069.

It is an arithmetic number, because the mean of its divisors is an integer number (5456465).

Almost surely, 2^26402225 is an apocalyptic number.

26402225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26402225 is a deficient number, since it is larger than the sum of its proper divisors (6336565).

26402225 is a wasteful number, since it uses less digits than its factorization.

26402225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056099 (or 1056094 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 26402225 is about 5138.3095469230. The cubic root of 26402225 is about 297.7694754880.

Adding to 26402225 its reverse (52220462), we get a palindrome (78622687).

The spelling of 26402225 in words is "twenty-six million, four hundred two thousand, two hundred twenty-five".