402256475857 has 4 divisors (see below), whose sum is σ = 407922060096. Its totient is φ = 396590891620.

The previous prime is 402256475833. The next prime is 402256475879. The reversal of 402256475857 is 758574652204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402256475857 - 2²³ = 402248087249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402256475798 and 402256475807.

It is not an unprimeable number, because it can be changed into a prime (402256475827) 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, 2832792013 + ... + 2832792154.

It is an arithmetic number, because the mean of its divisors is an integer number (101980515024).

Almost surely, 2^402256475857 is an apocalyptic number.

It is an amenable number.

402256475857 is a deficient number, since it is larger than the sum of its proper divisors (5665584239).

402256475857 is an equidigital number, since it uses as much as digits as its factorization.

402256475857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665584238.

The product of its (nonzero) digits is 18816000, while the sum is 55.

The spelling of 402256475857 in words is "four hundred two billion, two hundred fifty-six million, four hundred seventy-five thousand, eight hundred fifty-seven".