25445024643065 has 8 divisors (see below), whose sum is σ = 30534573712200. Its totient is φ = 20355656954112.

The previous prime is 25445024643013. The next prime is 25445024643097. The reversal of 25445024643065 is 56034642054452.

It can be written as a sum of positive squares in 4 ways, for example, as 436513918864 + 25008510724201 = 660692^2 + 5000851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25445024643065 - 2¹⁶ = 25445024577529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45036224 + ... + 45597713.

It is an arithmetic number, because the mean of its divisors is an integer number (3816821714025).

Almost surely, 2^{25445024643065} is an apocalyptic number.

It is an amenable number.

25445024643065 is a deficient number, since it is larger than the sum of its proper divisors (5089549069135).

25445024643065 is an equidigital number, since it uses as much as digits as its factorization.

25445024643065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90690091.

The product of its (nonzero) digits is 13824000, while the sum is 50.

The spelling of 25445024643065 in words is "twenty-five trillion, four hundred forty-five billion, twenty-four million, six hundred forty-three thousand, sixty-five".