2456421085 has 4 divisors (see below), whose sum is σ = 2947705308. Its totient is φ = 1965136864.

The previous prime is 2456421029. The next prime is 2456421089. The reversal of 2456421085 is 5801246542.

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 892455876 + 1563965209 = 29874^2 + 39547^2 .

It is a cyclic number.

It is not a de Polignac number, because 2456421085 - 2²⁵ = 2422866653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456421089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245642104 + ... + 245642113.

It is an arithmetic number, because the mean of its divisors is an integer number (736926327).

Almost surely, 2^2456421085 is an apocalyptic number.

It is an amenable number.

2456421085 is a deficient number, since it is larger than the sum of its proper divisors (491284223).

2456421085 is an equidigital number, since it uses as much as digits as its factorization.

2456421085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491284222.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 2456421085 is about 49562.2949932708. The cubic root of 2456421085 is about 1349.2764453730.

The spelling of 2456421085 in words is "two billion, four hundred fifty-six million, four hundred twenty-one thousand, eighty-five".