25780367 has 2 divisors, whose sum is σ = 25780368. Its totient is φ = 25780366.

The previous prime is 25780357. The next prime is 25780409. The reversal of 25780367 is 76308752.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25780367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25780367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25780357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12890183 + 12890184.

It is an arithmetic number, because the mean of its divisors is an integer number (12890184).

Almost surely, 2^25780367 is an apocalyptic number.

25780367 is a deficient number, since it is larger than the sum of its proper divisors (1).

25780367 is an equidigital number, since it uses as much as digits as its factorization.

25780367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 25780367 is about 5077.4370503237. The cubic root of 25780367 is about 295.4130649372.

The spelling of 25780367 in words is "twenty-five million, seven hundred eighty thousand, three hundred sixty-seven".