285745745 has 4 divisors (see below), whose sum is σ = 342894900. Its totient is φ = 228596592.

The previous prime is 285745739. The next prime is 285745753. The reversal of 285745745 is 547547582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102495376 + 183250369 = 10124^2 + 13537^2 .

It is a cyclic number.

It is not a de Polignac number, because 285745745 - 2¹⁴ = 285729361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285745745.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28574570 + ... + 28574579.

It is an arithmetic number, because the mean of its divisors is an integer number (85723725).

Almost surely, 2^285745745 is an apocalyptic number.

It is an amenable number.

285745745 is a deficient number, since it is larger than the sum of its proper divisors (57149155).

285745745 is an equidigital number, since it uses as much as digits as its factorization.

285745745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57149154.

The product of its digits is 1568000, while the sum is 47.

The square root of 285745745 is about 16904.0156471769. The cubic root of 285745745 is about 658.6579286266.

The spelling of 285745745 in words is "two hundred eighty-five million, seven hundred forty-five thousand, seven hundred forty-five".