25620591463 has 2 divisors, whose sum is σ = 25620591464. Its totient is φ = 25620591462.

The previous prime is 25620591461. The next prime is 25620591551. The reversal of 25620591463 is 36419502652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25620591463 - 2¹ = 25620591461 is a prime.

Together with 25620591461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25620591461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810295731 + 12810295732.

It is an arithmetic number, because the mean of its divisors is an integer number (12810295732).

Almost surely, 2^25620591463 is an apocalyptic number.

25620591463 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620591463 is an equidigital number, since it uses as much as digits as its factorization.

25620591463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 25620591463 in words is "twenty-five billion, six hundred twenty million, five hundred ninety-one thousand, four hundred sixty-three".