249975752423 has 4 divisors (see below), whose sum is σ = 249976825608. Its totient is φ = 249974679240.

The previous prime is 249975752401. The next prime is 249975752437. The reversal of 249975752423 is 324257579942.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 249975752423 - 2¹⁸ = 249975490279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249975752623) 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, 23936 + ... + 707477.

It is an arithmetic number, because the mean of its divisors is an integer number (62494206402).

Almost surely, 2^249975752423 is an apocalyptic number.

249975752423 is a deficient number, since it is larger than the sum of its proper divisors (1073185).

249975752423 is an equidigital number, since it uses as much as digits as its factorization.

249975752423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073184.

The product of its digits is 38102400, while the sum is 59.

The spelling of 249975752423 in words is "two hundred forty-nine billion, nine hundred seventy-five million, seven hundred fifty-two thousand, four hundred twenty-three".