25231512223 has 4 divisors (see below), whose sum is σ = 25233029928. Its totient is φ = 25229994520.

The previous prime is 25231512211. The next prime is 25231512283. The reversal of 25231512223 is 32221513252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25231512223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25231512191 and 25231512200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25231512283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733636 + ... + 767257.

It is an arithmetic number, because the mean of its divisors is an integer number (6308257482).

Almost surely, 2^25231512223 is an apocalyptic number.

25231512223 is a deficient number, since it is larger than the sum of its proper divisors (1517705).

25231512223 is a wasteful number, since it uses less digits than its factorization.

25231512223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517704.

The product of its digits is 7200, while the sum is 28.

The spelling of 25231512223 in words is "twenty-five billion, two hundred thirty-one million, five hundred twelve thousand, two hundred twenty-three".