25783451 has 2 divisors, whose sum is σ = 25783452. Its totient is φ = 25783450.

The previous prime is 25783427. The next prime is 25783453. The reversal of 25783451 is 15438752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25783451 - 2¹⁴ = 25767067 is a prime.

It is a Sophie Germain prime.

Together with 25783453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25783453) 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, 12891725 + 12891726.

It is an arithmetic number, because the mean of its divisors is an integer number (12891726).

Almost surely, 2^25783451 is an apocalyptic number.

25783451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25783451 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 25783451 = (53457218)₉.

25783451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 25783451 is about 5077.7407377691. The cubic root of 25783451 is about 295.4248441536.

The spelling of 25783451 in words is "twenty-five million, seven hundred eighty-three thousand, four hundred fifty-one".