254713955581 has 4 divisors (see below), whose sum is σ = 254714968732. Its totient is φ = 254712942432.

The previous prime is 254713955549. The next prime is 254713955681. The reversal of 254713955581 is 185559317452.

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 can be written as a sum of positive squares in 2 ways, for example, as 82848987225 + 171864968356 = 287835^2 + 414566^2 .

It is a cyclic number.

It is not a de Polignac number, because 254713955581 - 2⁵ = 254713955549 is a prime.

It is a super-2 number, since 2×254713955581² (a number of 24 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 (254713955381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187831 + ... + 738043.

It is an arithmetic number, because the mean of its divisors is an integer number (63678742183).

Almost surely, 2^254713955581 is an apocalyptic number.

It is an amenable number.

254713955581 is a deficient number, since it is larger than the sum of its proper divisors (1013151).

254713955581 is an equidigital number, since it uses as much as digits as its factorization.

254713955581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013150.

The product of its digits is 7560000, while the sum is 55.

The spelling of 254713955581 in words is "two hundred fifty-four billion, seven hundred thirteen million, nine hundred fifty-five thousand, five hundred eighty-one".