25245575287 has 2 divisors, whose sum is σ = 25245575288. Its totient is φ = 25245575286.

The previous prime is 25245575281. The next prime is 25245575309. The reversal of 25245575287 is 78257554252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25245575287 - 2³ = 25245575279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25245575281) 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, 12622787643 + 12622787644.

It is an arithmetic number, because the mean of its divisors is an integer number (12622787644).

Almost surely, 2^25245575287 is an apocalyptic number.

25245575287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25245575287 is an equidigital number, since it uses as much as digits as its factorization.

25245575287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840000, while the sum is 52.

The spelling of 25245575287 in words is "twenty-five billion, two hundred forty-five million, five hundred seventy-five thousand, two hundred eighty-seven".