2558721748 has 24 divisors (see below), whose sum is σ = 5172177024. Its totient is φ = 1094640000.

The previous prime is 2558721743. The next prime is 2558721749. The reversal of 2558721748 is 8471278552.

It is a happy number.

2558721748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558721743) 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, 1709628 + ... + 1711123.

It is an arithmetic number, because the mean of its divisors is an integer number (215507376).

Almost surely, 2^2558721748 is an apocalyptic number.

It is an amenable number.

2558721748 is an abundant number, since it is smaller than the sum of its proper divisors (2613455276).

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

2558721748 is a wasteful number, since it uses less digits than its factorization.

2558721748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420783 (or 3420781 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 49.

The square root of 2558721748 is about 50583.8091487780. The cubic root of 2558721748 is about 1367.7530340003.

The spelling of 2558721748 in words is "two billion, five hundred fifty-eight million, seven hundred twenty-one thousand, seven hundred forty-eight".