25285843215359 has 4 divisors (see below), whose sum is σ = 25291446110016. Its totient is φ = 25280240320704.

The previous prime is 25285843215319. The next prime is 25285843215383. The reversal of 25285843215359 is 95351234858252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25285843215359 - 2³² = 25281548248063 is a prime.

It is a super-2 number, since 2×25285843215359² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25285843215319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2801440559 + ... + 2801449584.

It is an arithmetic number, because the mean of its divisors is an integer number (6322861527504).

Almost surely, 2^{25285843215359} is an apocalyptic number.

25285843215359 is a deficient number, since it is larger than the sum of its proper divisors (5602894657).

25285843215359 is an equidigital number, since it uses as much as digits as its factorization.

25285843215359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602894656.

The product of its digits is 103680000, while the sum is 62.

The spelling of 25285843215359 in words is "twenty-five trillion, two hundred eighty-five billion, eight hundred forty-three million, two hundred fifteen thousand, three hundred fifty-nine".