805245555 has 16 divisors (see below), whose sum is σ = 1356203520. Its totient is φ = 406860768.

The previous prime is 805245547. The next prime is 805245557. The reversal of 805245555 is 555542508.

It is not a de Polignac number, because 805245555 - 2³ = 805245547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (805245557) 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, 1412427 + ... + 1412996.

It is an arithmetic number, because the mean of its divisors is an integer number (84762720).

Almost surely, 2^805245555 is an apocalyptic number.

805245555 is a deficient number, since it is larger than the sum of its proper divisors (550957965).

805245555 is a wasteful number, since it uses less digits than its factorization.

805245555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825450.

The product of its (nonzero) digits is 200000, while the sum is 39.

The square root of 805245555 is about 28376.8489265457. The cubic root of 805245555 is about 930.3423239726.

The spelling of 805245555 in words is "eight hundred five million, two hundred forty-five thousand, five hundred fifty-five".