254475649 has 2 divisors, whose sum is σ = 254475650. Its totient is φ = 254475648.

The previous prime is 254475647. The next prime is 254475659. The reversal of 254475649 is 946574452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233020225 + 21455424 = 15265^2 + 4632^2 .

It is a cyclic number.

It is not a de Polignac number, because 254475649 - 2¹ = 254475647 is a prime.

Together with 254475647, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 254475599 and 254475608.

It is not a weakly prime, because it can be changed into another prime (254475647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127237824 + 127237825.

It is an arithmetic number, because the mean of its divisors is an integer number (127237825).

Almost surely, 2^254475649 is an apocalyptic number.

It is an amenable number.

254475649 is a deficient number, since it is larger than the sum of its proper divisors (1).

254475649 is an equidigital number, since it uses as much as digits as its factorization.

254475649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 46.

The square root of 254475649 is about 15952.2929072908. The cubic root of 254475649 is about 633.6976212340.

The spelling of 254475649 in words is "two hundred fifty-four million, four hundred seventy-five thousand, six hundred forty-nine".