2545564520 has 32 divisors (see below), whose sum is σ = 6028970400. Its totient is φ = 964634688.

The previous prime is 2545564519. The next prime is 2545564529. The reversal of 2545564520 is 254655452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (2545564529) 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, 1673954 + ... + 1675473.

It is an arithmetic number, because the mean of its divisors is an integer number (188405325).

Almost surely, 2^2545564520 is an apocalyptic number.

2545564520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545564520 is an abundant number, since it is smaller than the sum of its proper divisors (3483405880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545564520 is a wasteful number, since it uses less digits than its factorization.

2545564520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349457 (or 3349453 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

The square root of 2545564520 is about 50453.5877812470. The cubic root of 2545564520 is about 1365.4046254019.

The spelling of 2545564520 in words is "two billion, five hundred forty-five million, five hundred sixty-four thousand, five hundred twenty".