26425781 has 8 divisors (see below), whose sum is σ = 27954240. Its totient is φ = 24928992.

The previous prime is 26425759. The next prime is 26425787. The reversal of 26425781 is 18752462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26425781 - 2⁶ = 26425717 is a prime.

It is a super-2 number, since 2×26425781² = 1396643802919922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26425787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6191 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (3494280).

Almost surely, 2^26425781 is an apocalyptic number.

It is an amenable number.

26425781 is a deficient number, since it is larger than the sum of its proper divisors (1528459).

26425781 is a wasteful number, since it uses less digits than its factorization.

26425781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15835.

The product of its digits is 26880, while the sum is 35.

The square root of 26425781 is about 5140.6012294283. The cubic root of 26425781 is about 297.8580055615.

The spelling of 26425781 in words is "twenty-six million, four hundred twenty-five thousand, seven hundred eighty-one".