25399648363 has 2 divisors, whose sum is σ = 25399648364. Its totient is φ = 25399648362.

The previous prime is 25399648333. The next prime is 25399648399. The reversal of 25399648363 is 36384699352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25399648363 - 2⁹ = 25399647851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25399648298 and 25399648307.

It is not a weakly prime, because it can be changed into another prime (25399648333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12699824181 + 12699824182.

It is an arithmetic number, because the mean of its divisors is an integer number (12699824182).

Almost surely, 2^25399648363 is an apocalyptic number.

25399648363 is a deficient number, since it is larger than the sum of its proper divisors (1).

25399648363 is an equidigital number, since it uses as much as digits as its factorization.

25399648363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25194240, while the sum is 58.

The spelling of 25399648363 in words is "twenty-five billion, three hundred ninety-nine million, six hundred forty-eight thousand, three hundred sixty-three".