25578743 has 2 divisors, whose sum is σ = 25578744. Its totient is φ = 25578742.

The previous prime is 25578719. The next prime is 25578757. The reversal of 25578743 is 34787552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25578743 - 2¹⁴ = 25562359 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25578743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25578043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789371 + 12789372.

It is an arithmetic number, because the mean of its divisors is an integer number (12789372).

Almost surely, 2^25578743 is an apocalyptic number.

25578743 is a deficient number, since it is larger than the sum of its proper divisors (1).

25578743 is an equidigital number, since it uses as much as digits as its factorization.

25578743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 41.

The square root of 25578743 is about 5057.5431782635. The cubic root of 25578743 is about 294.6409228674.

The spelling of 25578743 in words is "twenty-five million, five hundred seventy-eight thousand, seven hundred forty-three".