25205827235827 has 12 divisors (see below), whose sum is σ = 29360436731920. Its totient is φ = 21197353346208.

The previous prime is 25205827235807. The next prime is 25205827235857. The reversal of 25205827235827 is 72853272850252.

It is a de Polignac number, because none of the positive numbers 2^k-25205827235827 is a prime.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25205827235807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640925952 + ... + 640965277.

Almost surely, 2^{25205827235827} is an apocalyptic number.

25205827235827 is a deficient number, since it is larger than the sum of its proper divisors (4154609496093).

25205827235827 is an equidigital number, since it uses as much as digits as its factorization.

25205827235827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281891342 (or 1281891289 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 58.

The spelling of 25205827235827 in words is "twenty-five trillion, two hundred five billion, eight hundred twenty-seven million, two hundred thirty-five thousand, eight hundred twenty-seven".