254248309 has 12 divisors (see below), whose sum is σ = 296873100. Its totient is φ = 217105728.

The previous prime is 254248303. The next prime is 254248327. The reversal of 254248309 is 903842452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86545809 + 167702500 = 9303^2 + 12950^2 .

It is not a de Polignac number, because 254248309 - 2¹⁵ = 254215541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254248303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3537 + ... + 22825.

It is an arithmetic number, because the mean of its divisors is an integer number (24739425).

Almost surely, 2^254248309 is an apocalyptic number.

It is an amenable number.

254248309 is a deficient number, since it is larger than the sum of its proper divisors (42624791).

254248309 is a wasteful number, since it uses less digits than its factorization.

254248309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19572 (or 19565 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 254248309 is about 15945.1656937142. The cubic root of 254248309 is about 633.5088569522.

It can be divided in two parts, 25424 and 8309, that added together give a palindrome (33733).

The spelling of 254248309 in words is "two hundred fifty-four million, two hundred forty-eight thousand, three hundred nine".