26218725 has 24 divisors (see below), whose sum is σ = 46684512. Its totient is φ = 12907200.

The previous prime is 26218723. The next prime is 26218739. The reversal of 26218725 is 52781262.

It is not a de Polignac number, because 26218725 - 2¹ = 26218723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26218723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12471 + ... + 14420.

It is an arithmetic number, because the mean of its divisors is an integer number (1945188).

Almost surely, 2^26218725 is an apocalyptic number.

26218725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26218725 is a deficient number, since it is larger than the sum of its proper divisors (20465787).

26218725 is a wasteful number, since it uses less digits than its factorization.

26218725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26917 (or 26912 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 26218725 is about 5120.4223458617. The cubic root of 26218725 is about 297.0780214253.

Adding to 26218725 its reverse (52781262), we get a palindrome (78999987).

The spelling of 26218725 in words is "twenty-six million, two hundred eighteen thousand, seven hundred twenty-five".