254543457529 has 3 divisors (see below), whose sum is σ = 254543962053. Its totient is φ = 254542953006.

The previous prime is 254543457473. The next prime is 254543457547. The reversal of 254543457529 is 925754345452.

The square root of 254543457529 is 504523.

It is a perfect power (a square), and thus also a powerful number.

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 not a de Polignac number, because 254543457529 - 2¹⁹ = 254542933241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254543457529.

It is not an unprimeable number, because it can be changed into a prime (254543458529) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 252262 + ... + 756784.

It is an arithmetic number, because the mean of its divisors is an integer number (84847987351).

Almost surely, 2^254543457529 is an apocalyptic number.

254543457529 is the 504523-rd square number.

254543457529 is the 252262-nd centered octagonal number.

It is an amenable number.

254543457529 is a deficient number, since it is larger than the sum of its proper divisors (504524).

254543457529 is an frugal number, since it uses more digits than its factorization.

254543457529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009046 (or 504523 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 55.

The spelling of 254543457529 in words is "two hundred fifty-four billion, five hundred forty-three million, four hundred fifty-seven thousand, five hundred twenty-nine".