25320331243 has 8 divisors (see below), whose sum is σ = 25428953088. Its totient is φ = 25211879784.

The previous prime is 25320331229. The next prime is 25320331261. The reversal of 25320331243 is 34213302352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25320331243 is a prime.

It is a super-2 number, since 2×25320331243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25320331213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259830 + ... + 343732.

It is an arithmetic number, because the mean of its divisors is an integer number (3178619136).

Almost surely, 2^25320331243 is an apocalyptic number.

25320331243 is a deficient number, since it is larger than the sum of its proper divisors (108621845).

25320331243 is an equidigital number, since it uses as much as digits as its factorization.

25320331243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85193.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 25320331243 its reverse (34213302352), we get a palindrome (59533633595).

The spelling of 25320331243 in words is "twenty-five billion, three hundred twenty million, three hundred thirty-one thousand, two hundred forty-three".