26425428481 has 9 divisors (see below), whose sum is σ = 26628377923. Its totient is φ = 26224017880.

The previous prime is 26425428451. The next prime is 26425428511. The reversal of 26425428481 is 18482452462.

The square root of 26425428481 is 162559.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (26425428451) and next prime (26425428511).

It can be written as a sum of positive squares in only one way, i.e., 3095920881 + 23329507600 = 55641^2 + 152740^2 .

It is not a de Polignac number, because 26425428481 - 2²⁵ = 26391874049 is a prime.

It is a super-2 number, since 2×26425428481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26425428451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24220746 + ... + 24221836.

Almost surely, 2^26425428481 is an apocalyptic number.

26425428481 is the 162559-th square number.

26425428481 is the 81280-th centered octagonal number.

It is an amenable number.

26425428481 is a deficient number, since it is larger than the sum of its proper divisors (202949442).

26425428481 is an frugal number, since it uses more digits than its factorization.

26425428481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480 (or 1240 counting only the distinct ones).

The product of its digits is 983040, while the sum is 46.

The spelling of 26425428481 in words is "twenty-six billion, four hundred twenty-five million, four hundred twenty-eight thousand, four hundred eighty-one".