2581158725728 has 24 divisors (see below), whose sum is σ = 5543624991240. Its totient is φ = 1173253966080.

The previous prime is 2581158725653. The next prime is 2581158725753. The reversal of 2581158725728 is 8275278511852.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666418293 + ... + 3666418996.

It is an arithmetic number, because the mean of its divisors is an integer number (230984374635).

Almost surely, 2^{2581158725728} is an apocalyptic number.

It is an amenable number.

2581158725728 is an abundant number, since it is smaller than the sum of its proper divisors (2962466265512).

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

2581158725728 is a wasteful number, since it uses less digits than its factorization.

2581158725728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332837310 (or 7332837302 counting only the distinct ones).

The product of its digits is 25088000, while the sum is 61.

The spelling of 2581158725728 in words is "two trillion, five hundred eighty-one billion, one hundred fifty-eight million, seven hundred twenty-five thousand, seven hundred twenty-eight".