25670143 has 2 divisors, whose sum is σ = 25670144. Its totient is φ = 25670142.

The previous prime is 25670137. The next prime is 25670149. The reversal of 25670143 is 34107652.

It is a balanced prime because it is at equal distance from previous prime (25670137) and next prime (25670149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25670143 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25670149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835071 + 12835072.

It is an arithmetic number, because the mean of its divisors is an integer number (12835072).

Almost surely, 2^25670143 is an apocalyptic number.

25670143 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670143 is an equidigital number, since it uses as much as digits as its factorization.

25670143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 25670143 is about 5066.5711284852. The cubic root of 25670143 is about 294.9914504848.

Adding to 25670143 its reverse (34107652), we get a palindrome (59777795).

The spelling of 25670143 in words is "twenty-five million, six hundred seventy thousand, one hundred forty-three".