25920673 has 2 divisors, whose sum is σ = 25920674. Its totient is φ = 25920672.

The previous prime is 25920667. The next prime is 25920677. The reversal of 25920673 is 37602952.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16136289 + 9784384 = 4017^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 25920673 - 2²¹ = 23823521 is a prime.

It is not a weakly prime, because it can be changed into another prime (25920677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12960336 + 12960337.

It is an arithmetic number, because the mean of its divisors is an integer number (12960337).

Almost surely, 2^25920673 is an apocalyptic number.

It is an amenable number.

25920673 is a deficient number, since it is larger than the sum of its proper divisors (1).

25920673 is an equidigital number, since it uses as much as digits as its factorization.

25920673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 25920673 is about 5091.2349189563. The cubic root of 25920673 is about 295.9480102566.

The spelling of 25920673 in words is "twenty-five million, nine hundred twenty thousand, six hundred seventy-three".