254421065 has 16 divisors (see below), whose sum is σ = 332005392. Its totient is φ = 186384384.

The previous prime is 254421059. The next prime is 254421071. The reversal of 254421065 is 560124452.

It is an interprime number because it is at equal distance from previous prime (254421059) and next prime (254421071).

It can be written as a sum of positive squares in 8 ways, for example, as 67634176 + 186786889 = 8224^2 + 13667^2 .

It is a cyclic number.

It is not a de Polignac number, because 254421065 - 2²⁶ = 187312201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37304 + ... + 43593.

It is an arithmetic number, because the mean of its divisors is an integer number (20750337).

Almost surely, 2^254421065 is an apocalyptic number.

It is an amenable number.

254421065 is a deficient number, since it is larger than the sum of its proper divisors (77584327).

254421065 is a wasteful number, since it uses less digits than its factorization.

254421065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80956.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 254421065 is about 15950.5819643046. The cubic root of 254421065 is about 633.6523094665.

The spelling of 254421065 in words is "two hundred fifty-four million, four hundred twenty-one thousand, sixty-five".