254145005 has 4 divisors (see below), whose sum is σ = 304974012. Its totient is φ = 203316000.

The previous prime is 254144993. The next prime is 254145071. The reversal of 254145005 is 500541452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36228361 + 217916644 = 6019^2 + 14762^2 .

It is a de Polignac number, because none of the positive numbers 2^k-254145005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25414496 + ... + 25414505.

It is an arithmetic number, because the mean of its divisors is an integer number (76243503).

Almost surely, 2^254145005 is an apocalyptic number.

It is an amenable number.

254145005 is a deficient number, since it is larger than the sum of its proper divisors (50829007).

254145005 is an equidigital number, since it uses as much as digits as its factorization.

254145005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50829006.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 254145005 is about 15941.9260128756. The cubic root of 254145005 is about 633.4230446941.

Adding to 254145005 its reverse (500541452), we get a palindrome (754686457).

The spelling of 254145005 in words is "two hundred fifty-four million, one hundred forty-five thousand, five".