26425233581 has 2 divisors, whose sum is σ = 26425233582. Its totient is φ = 26425233580.

The previous prime is 26425233563. The next prime is 26425233599. The reversal of 26425233581 is 18533252462.

It is a balanced prime because it is at equal distance from previous prime (26425233563) and next prime (26425233599).

It can be written as a sum of positive squares in only one way, i.e., 19837314025 + 6587919556 = 140845^2 + 81166^2 .

It is a cyclic number.

It is not a de Polignac number, because 26425233581 - 2¹⁸ = 26424971437 is a prime.

It is a super-2 number, since 2×26425233581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26425233781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13212616790 + 13212616791.

It is an arithmetic number, because the mean of its divisors is an integer number (13212616791).

Almost surely, 2^26425233581 is an apocalyptic number.

It is an amenable number.

26425233581 is a deficient number, since it is larger than the sum of its proper divisors (1).

26425233581 is an equidigital number, since it uses as much as digits as its factorization.

26425233581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The spelling of 26425233581 in words is "twenty-six billion, four hundred twenty-five million, two hundred thirty-three thousand, five hundred eighty-one".