26252423032421 has 4 divisors (see below), whose sum is σ = 26252438671500. Its totient is φ = 26252407393344.

The previous prime is 26252423032417. The next prime is 26252423032441. The reversal of 26252423032421 is 12423032425262.

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 12956299464196 + 13296123568225 = 3599486^2 + 3646385^2 .

It is a cyclic number.

It is not a de Polignac number, because 26252423032421 - 2² = 26252423032417 is a prime.

It is a super-2 number, since 2×26252423032421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26252423032441) 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, 4950746 + ... + 8775803.

It is an arithmetic number, because the mean of its divisors is an integer number (6563109667875).

Almost surely, 2^{26252423032421} is an apocalyptic number.

It is an amenable number.

26252423032421 is a deficient number, since it is larger than the sum of its proper divisors (15639079).

26252423032421 is a wasteful number, since it uses less digits than its factorization.

26252423032421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15639078.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 26252423032421 its reverse (12423032425262), we get a palindrome (38675455457683).

The spelling of 26252423032421 in words is "twenty-six trillion, two hundred fifty-two billion, four hundred twenty-three million, thirty-two thousand, four hundred twenty-one".