25225522541987 has 2 divisors, whose sum is σ = 25225522541988. Its totient is φ = 25225522541986.

The previous prime is 25225522541911. The next prime is 25225522542001. The reversal of 25225522541987 is 78914522552252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25225522541987 - 2⁸ = 25225522541731 is a prime.

It is not a weakly prime, because it can be changed into another prime (25225522541887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12612761270993 + 12612761270994.

It is an arithmetic number, because the mean of its divisors is an integer number (12612761270994).

Almost surely, 2^{25225522541987} is an apocalyptic number.

25225522541987 is a deficient number, since it is larger than the sum of its proper divisors (1).

25225522541987 is an equidigital number, since it uses as much as digits as its factorization.

25225522541987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320000, while the sum is 59.

The spelling of 25225522541987 in words is "twenty-five trillion, two hundred twenty-five billion, five hundred twenty-two million, five hundred forty-one thousand, nine hundred eighty-seven".