254678645 has 16 divisors (see below), whose sum is σ = 330810480. Its totient is φ = 187106304.

The previous prime is 254678629. The next prime is 254678653. The reversal of 254678645 is 546876452.

It can be written as a sum of positive squares in 8 ways, for example, as 26275876 + 228402769 = 5126^2 + 15113^2 .

It is a cyclic number.

It is not a de Polignac number, because 254678645 - 2⁴ = 254678629 is a prime.

It is a super-2 number, since 2×254678645² = 129722424438072050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 254678645.

It is a congruent 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, 2861 + ... + 22749.

It is an arithmetic number, because the mean of its divisors is an integer number (20675655).

Almost surely, 2^254678645 is an apocalyptic number.

It is an amenable number.

254678645 is a deficient number, since it is larger than the sum of its proper divisors (76131835).

254678645 is a wasteful number, since it uses less digits than its factorization.

254678645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20104.

The product of its digits is 1612800, while the sum is 47.

The square root of 254678645 is about 15958.6542352418. The cubic root of 254678645 is about 633.8660772899.

The spelling of 254678645 in words is "two hundred fifty-four million, six hundred seventy-eight thousand, six hundred forty-five".