254224002145 has 4 divisors (see below), whose sum is σ = 305068802580. Its totient is φ = 203379201712.

The previous prime is 254224002107. The next prime is 254224002161. The reversal of 254224002145 is 541200422452.

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 164391324304 + 89832677841 = 405452^2 + 299721^2 .

It is a cyclic number.

It is not a de Polignac number, because 254224002145 - 2¹³ = 254223993953 is a prime.

It is a super-3 number, since 3×254224002145³ (a number of 35 digits) contains 333 as substring.

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, 25422400210 + ... + 25422400219.

It is an arithmetic number, because the mean of its divisors is an integer number (76267200645).

Almost surely, 2^254224002145 is an apocalyptic number.

It is an amenable number.

254224002145 is a deficient number, since it is larger than the sum of its proper divisors (50844800435).

254224002145 is an equidigital number, since it uses as much as digits as its factorization.

254224002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50844800434.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 254224002145 its reverse (541200422452), we get a palindrome (795424424597).

The spelling of 254224002145 in words is "two hundred fifty-four billion, two hundred twenty-four million, two thousand, one hundred forty-five".