285677725 has 6 divisors (see below), whose sum is σ = 354240410. Its totient is φ = 228542160.

The previous prime is 285677683. The next prime is 285677747. The reversal of 285677725 is 527776582.

It can be written as a sum of positive squares in 3 ways, for example, as 121 + 285677604 = 11^2 + 16902^2 .

It is not a de Polignac number, because 285677725 - 2¹³ = 285669533 is a prime.

It is a super-2 number, since 2×285677725² = 163223525122351250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5713530 + ... + 5713579.

Almost surely, 2^285677725 is an apocalyptic number.

285677725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285677725 is a deficient number, since it is larger than the sum of its proper divisors (68562685).

285677725 is a wasteful number, since it uses less digits than its factorization.

285677725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11427119 (or 11427114 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 49.

The square root of 285677725 is about 16902.0035794577. The cubic root of 285677725 is about 658.6056613360.

The spelling of 285677725 in words is "two hundred eighty-five million, six hundred seventy-seven thousand, seven hundred twenty-five".