25043779 has 2 divisors, whose sum is σ = 25043780. Its totient is φ = 25043778.

The previous prime is 25043747. The next prime is 25043797. The reversal of 25043779 is 97734052.

Together with next prime (25043797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25043779 - 2⁵ = 25043747 is a prime.

It is not a weakly prime, because it can be changed into another prime (25043279) 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, 12521889 + 12521890.

It is an arithmetic number, because the mean of its divisors is an integer number (12521890).

Almost surely, 2^25043779 is an apocalyptic number.

25043779 is a deficient number, since it is larger than the sum of its proper divisors (1).

25043779 is an equidigital number, since it uses as much as digits as its factorization.

25043779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 25043779 is about 5004.3759850755. The cubic root of 25043779 is about 292.5723550517.

The spelling of 25043779 in words is "twenty-five million, forty-three thousand, seven hundred seventy-nine".