2545628688 has 80 divisors (see below), whose sum is σ = 7736736960. Its totient is φ = 798626304.

The previous prime is 2545628669. The next prime is 2545628689. The reversal of 2545628688 is 8868265452.

It is a happy number.

2545628688 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 628 + 6 + 8 + 8 = 666.

2545628688 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2545628689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165970 + ... + 180657.

It is an arithmetic number, because the mean of its divisors is an integer number (96709212).

Almost surely, 2^2545628688 is an apocalyptic number.

It is an amenable number.

2545628688 is an abundant number, since it is smaller than the sum of its proper divisors (5191108272).

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

2545628688 is a wasteful number, since it uses less digits than its factorization.

2545628688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346661 (or 346649 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The square root of 2545628688 is about 50454.2236884089. The cubic root of 2545628688 is about 1365.4160982399.

The spelling of 2545628688 in words is "two billion, five hundred forty-five million, six hundred twenty-eight thousand, six hundred eighty-eight".