25456407287 has 2 divisors, whose sum is σ = 25456407288. Its totient is φ = 25456407286.

The previous prime is 25456407247. The next prime is 25456407331. The reversal of 25456407287 is 78270465452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25456407287 - 2¹² = 25456403191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25456407247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12728203643 + 12728203644.

It is an arithmetic number, because the mean of its divisors is an integer number (12728203644).

Almost surely, 2^25456407287 is an apocalyptic number.

25456407287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25456407287 is an equidigital number, since it uses as much as digits as its factorization.

25456407287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 25456407287 in words is "twenty-five billion, four hundred fifty-six million, four hundred seven thousand, two hundred eighty-seven".