25567809490963 has 2 divisors, whose sum is σ = 25567809490964. Its totient is φ = 25567809490962.

The previous prime is 25567809490901. The next prime is 25567809490967. The reversal of 25567809490963 is 36909490876552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25567809490963 - 2¹⁷ = 25567809359891 is a prime.

It is a super-2 number, since 2×25567809490963² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25567809490967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12783904745481 + 12783904745482.

It is an arithmetic number, because the mean of its divisors is an integer number (12783904745482).

Almost surely, 2^{25567809490963} is an apocalyptic number.

25567809490963 is a deficient number, since it is larger than the sum of its proper divisors (1).

25567809490963 is an equidigital number, since it uses as much as digits as its factorization.

25567809490963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 881798400, while the sum is 73.

The spelling of 25567809490963 in words is "twenty-five trillion, five hundred sixty-seven billion, eight hundred nine million, four hundred ninety thousand, nine hundred sixty-three".