406280255 has 4 divisors (see below), whose sum is σ = 487536312. Its totient is φ = 325024200.

The previous prime is 406280243. The next prime is 406280261. The reversal of 406280255 is 552082604.

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

It is not a de Polignac number, because 406280255 - 2¹² = 406276159 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 40628021 + ... + 40628030.

It is an arithmetic number, because the mean of its divisors is an integer number (121884078).

Almost surely, 2^406280255 is an apocalyptic number.

406280255 is a deficient number, since it is larger than the sum of its proper divisors (81256057).

406280255 is an equidigital number, since it uses as much as digits as its factorization.

406280255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81256056.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 406280255 is about 20156.3948909521. The cubic root of 406280255 is about 740.6424023518.

The spelling of 406280255 in words is "four hundred six million, two hundred eighty thousand, two hundred fifty-five".