25043212385 has 4 divisors (see below), whose sum is σ = 30051854868. Its totient is φ = 20034569904.

The previous prime is 25043212379. The next prime is 25043212417. The reversal of 25043212385 is 58321234052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2583993889 + 22459218496 = 50833^2 + 149864^2 .

It is a cyclic number.

It is not a de Polignac number, because 25043212385 - 2³⁰ = 23969470561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504321234 + ... + 2504321243.

It is an arithmetic number, because the mean of its divisors is an integer number (7512963717).

Almost surely, 2^25043212385 is an apocalyptic number.

It is an amenable number.

25043212385 is a deficient number, since it is larger than the sum of its proper divisors (5008642483).

25043212385 is an equidigital number, since it uses as much as digits as its factorization.

25043212385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008642482.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 25043212385 in words is "twenty-five billion, forty-three million, two hundred twelve thousand, three hundred eighty-five".