25674421 has 2 divisors, whose sum is σ = 25674422. Its totient is φ = 25674420.

The previous prime is 25674401. The next prime is 25674427. The reversal of 25674421 is 12447652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 5827396 = 4455^2 + 2414^2 .

It is a cyclic number.

It is not a de Polignac number, because 25674421 - 2¹⁵ = 25641653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25674427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12837210 + 12837211.

It is an arithmetic number, because the mean of its divisors is an integer number (12837211).

Almost surely, 2^25674421 is an apocalyptic number.

It is an amenable number.

25674421 is a deficient number, since it is larger than the sum of its proper divisors (1).

25674421 is an equidigital number, since it uses as much as digits as its factorization.

25674421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 25674421 is about 5066.9932899107. The cubic root of 25674421 is about 295.0078366203.

The spelling of 25674421 in words is "twenty-five million, six hundred seventy-four thousand, four hundred twenty-one".