23143451525 has 12 divisors (see below), whose sum is σ = 28730481444. Its totient is φ = 18493728000.

The previous prime is 23143451521. The next prime is 23143451579. The reversal of 23143451525 is 52515434132.

It can be written as a sum of positive squares in 6 ways, for example, as 4817331649 + 18326119876 = 69407^2 + 135374^2 .

It is not a de Polignac number, because 23143451525 - 2² = 23143451521 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 (23143451521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503366 + ... + 547415.

It is an arithmetic number, because the mean of its divisors is an integer number (2394206787).

Almost surely, 2^23143451525 is an apocalyptic number.

23143451525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23143451525 is a deficient number, since it is larger than the sum of its proper divisors (5587029919).

23143451525 is a wasteful number, since it uses less digits than its factorization.

23143451525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051672 (or 1051667 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 23143451525 its reverse (52515434132), we get a palindrome (75658885657).

The spelling of 23143451525 in words is "twenty-three billion, one hundred forty-three million, four hundred fifty-one thousand, five hundred twenty-five".