26425921 has 2 divisors, whose sum is σ = 26425922. Its totient is φ = 26425920.

The previous prime is 26425849. The next prime is 26425967. The reversal of 26425921 is 12952462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16313521 + 10112400 = 4039^2 + 3180^2 .

It is a cyclic number.

It is not a de Polignac number, because 26425921 - 2¹⁵ = 26393153 is a prime.

It is not a weakly prime, because it can be changed into another prime (26425121) 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 as a sum of consecutive naturals, namely, 13212960 + 13212961.

It is an arithmetic number, because the mean of its divisors is an integer number (13212961).

Almost surely, 2^26425921 is an apocalyptic number.

It is an amenable number.

26425921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26425921 is an equidigital number, since it uses as much as digits as its factorization.

26425921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 26425921 is about 5140.6148464945. The cubic root of 26425921 is about 297.8585315636.

The spelling of 26425921 in words is "twenty-six million, four hundred twenty-five thousand, nine hundred twenty-one".