26254721 has 4 divisors (see below), whose sum is σ = 26495700. Its totient is φ = 26013744.

The previous prime is 26254703. The next prime is 26254741. The reversal of 26254721 is 12745262.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 14938225 = 3364^2 + 3865^2 .

It is a cyclic number.

It is not a de Polignac number, because 26254721 - 2¹⁴ = 26238337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26254741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120326 + ... + 120543.

It is an arithmetic number, because the mean of its divisors is an integer number (6623925).

Almost surely, 2^26254721 is an apocalyptic number.

It is an amenable number.

26254721 is a deficient number, since it is larger than the sum of its proper divisors (240979).

26254721 is a wasteful number, since it uses less digits than its factorization.

26254721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240978.

The product of its digits is 6720, while the sum is 29.

The square root of 26254721 is about 5123.9360846911. The cubic root of 26254721 is about 297.2139132404.

Adding to 26254721 its reverse (12745262), we get a palindrome (38999983).

The spelling of 26254721 in words is "twenty-six million, two hundred fifty-four thousand, seven hundred twenty-one".