4540256685 has 16 divisors (see below), whose sum is σ = 8071567680. Its totient is φ = 2421470160.

The previous prime is 4540256561. The next prime is 4540256687. The reversal of 4540256685 is 5866520454.

4540256685 is a `hidden beast` number, since 4 + 5 + 4 + 0 + 2 + 566 + 85 = 666.

It is not a de Polignac number, because 4540256685 - 2⁸ = 4540256429 is a prime.

It is a super-2 number, since 2×4540256685² = 41227861531374378450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4540256685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4540256687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16815631 + ... + 16815900.

It is an arithmetic number, because the mean of its divisors is an integer number (504472980).

Almost surely, 2^4540256685 is an apocalyptic number.

4540256685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4540256685 is a deficient number, since it is larger than the sum of its proper divisors (3531310995).

4540256685 is a wasteful number, since it uses less digits than its factorization.

4540256685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33631545 (or 33631539 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The square root of 4540256685 is about 67381.4268548834. The cubic root of 4540256685 is about 1655.8721513093.

The spelling of 4540256685 in words is "four billion, five hundred forty million, two hundred fifty-six thousand, six hundred eighty-five".