254253645 has 12 divisors (see below), whose sum is σ = 440706396. Its totient is φ = 135601920.

The previous prime is 254253641. The next prime is 254253647. The reversal of 254253645 is 546352452.

254253645 is a `hidden beast` number, since 2 + 5 + 4 + 2 + 5 + 3 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 151068681 + 103184964 = 12291^2 + 10158^2 .

It is not a de Polignac number, because 254253645 - 2² = 254253641 is a prime.

It is a super-3 number, since 3×254253645³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254253641) 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, 2824996 + ... + 2825085.

It is an arithmetic number, because the mean of its divisors is an integer number (36725533).

Almost surely, 2^254253645 is an apocalyptic number.

It is an amenable number.

254253645 is a deficient number, since it is larger than the sum of its proper divisors (186452751).

254253645 is a wasteful number, since it uses less digits than its factorization.

254253645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650092 (or 5650089 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 254253645 is about 15945.3330162778. Note that the first 3 decimals coincide. The cubic root of 254253645 is about 633.5132888133.

The spelling of 254253645 in words is "two hundred fifty-four million, two hundred fifty-three thousand, six hundred forty-five".