2545622817 has 8 divisors (see below), whose sum is σ = 3405220896. Its totient is φ = 1691553312.

The previous prime is 2545622809. The next prime is 2545622843. The reversal of 2545622817 is 7182265452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2545622817 - 2³ = 2545622809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545622867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381068 + ... + 1382909.

It is an arithmetic number, because the mean of its divisors is an integer number (425652612).

Almost surely, 2^2545622817 is an apocalyptic number.

It is an amenable number.

2545622817 is a deficient number, since it is larger than the sum of its proper divisors (859598079).

2545622817 is a wasteful number, since it uses less digits than its factorization.

2545622817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764287.

The product of its digits is 268800, while the sum is 42.

The square root of 2545622817 is about 50454.1655069232. The cubic root of 2545622817 is about 1365.4150485497.

The spelling of 2545622817 in words is "two billion, five hundred forty-five million, six hundred twenty-two thousand, eight hundred seventeen".