2545614641 has 4 divisors (see below), whose sum is σ = 2555756784. Its totient is φ = 2535472500.

The previous prime is 2545614613. The next prime is 2545614647. The reversal of 2545614641 is 1464165452.

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 2545614641 - 2²² = 2541420337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2545614595 and 2545614604.

It is not an unprimeable number, because it can be changed into a prime (2545614647) 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, 5070695 + ... + 5071196.

It is an arithmetic number, because the mean of its divisors is an integer number (638939196).

Almost surely, 2^2545614641 is an apocalyptic number.

It is an amenable number.

2545614641 is a deficient number, since it is larger than the sum of its proper divisors (10142143).

2545614641 is a wasteful number, since it uses less digits than its factorization.

2545614641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10142142.

The product of its digits is 115200, while the sum is 38.

The square root of 2545614641 is about 50454.0844828246. The cubic root of 2545614641 is about 1365.4135867404.

The spelling of 2545614641 in words is "two billion, five hundred forty-five million, six hundred fourteen thousand, six hundred forty-one".