2506945489 has 4 divisors (see below), whose sum is σ = 2507129856. Its totient is φ = 2506761124.

The previous prime is 2506945457. The next prime is 2506945517. The reversal of 2506945489 is 9845496052.

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 2506945489 - 2⁵ = 2506945457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506942489) 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, 70009 + ... + 99574.

It is an arithmetic number, because the mean of its divisors is an integer number (626782464).

Almost surely, 2^2506945489 is an apocalyptic number.

It is an amenable number.

2506945489 is a deficient number, since it is larger than the sum of its proper divisors (184367).

2506945489 is a wasteful number, since it uses less digits than its factorization.

2506945489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184366.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The square root of 2506945489 is about 50069.4067170762. The cubic root of 2506945489 is about 1358.4645099992.

The spelling of 2506945489 in words is "two billion, five hundred six million, nine hundred forty-five thousand, four hundred eighty-nine".