25943973623 has 4 divisors (see below), whose sum is σ = 26369284728. Its totient is φ = 25518662520.

The previous prime is 25943973611. The next prime is 25943973637. The reversal of 25943973623 is 32637934952.

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 25943973623 - 2¹⁴ = 25943957239 is a prime.

It is a super-2 number, since 2×25943973623² (a number of 22 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 (25943873623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212655461 + ... + 212655582.

It is an arithmetic number, because the mean of its divisors is an integer number (6592321182).

Almost surely, 2^25943973623 is an apocalyptic number.

25943973623 is a deficient number, since it is larger than the sum of its proper divisors (425311105).

25943973623 is an equidigital number, since it uses as much as digits as its factorization.

25943973623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425311104.

The product of its digits is 7348320, while the sum is 53.

The spelling of 25943973623 in words is "twenty-five billion, nine hundred forty-three million, nine hundred seventy-three thousand, six hundred twenty-three".