25936063987 has 2 divisors, whose sum is σ = 25936063988. Its totient is φ = 25936063986.

The previous prime is 25936063921. The next prime is 25936063999. The reversal of 25936063987 is 78936063952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25936063987 - 2²³ = 25927675379 is a prime.

It is not a weakly prime, because it can be changed into another prime (25936063687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12968031993 + 12968031994.

It is an arithmetic number, because the mean of its divisors is an integer number (12968031994).

Almost surely, 2^25936063987 is an apocalyptic number.

25936063987 is a deficient number, since it is larger than the sum of its proper divisors (1).

25936063987 is an equidigital number, since it uses as much as digits as its factorization.

25936063987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 58.

The spelling of 25936063987 in words is "twenty-five billion, nine hundred thirty-six million, sixty-three thousand, nine hundred eighty-seven".