26425813 has 2 divisors, whose sum is σ = 26425814. Its totient is φ = 26425812.

The previous prime is 26425811. The next prime is 26425829. The reversal of 26425813 is 31852462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21594609 + 4831204 = 4647^2 + 2198^2 .

It is a cyclic number.

It is not a de Polignac number, because 26425813 - 2¹ = 26425811 is a prime.

Together with 26425811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26425811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13212906 + 13212907.

It is an arithmetic number, because the mean of its divisors is an integer number (13212907).

Almost surely, 2^26425813 is an apocalyptic number.

It is an amenable number.

26425813 is a deficient number, since it is larger than the sum of its proper divisors (1).

26425813 is an equidigital number, since it uses as much as digits as its factorization.

26425813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 26425813 is about 5140.6043419038. The cubic root of 26425813 is about 297.8581257907.

The spelling of 26425813 in words is "twenty-six million, four hundred twenty-five thousand, eight hundred thirteen".