2578025500 has 24 divisors (see below), whose sum is σ = 5630408784. Its totient is φ = 1031210000.

The previous prime is 2578025497. The next prime is 2578025519. The reversal of 2578025500 is 55208752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2577526 + ... + 2578525.

It is an arithmetic number, because the mean of its divisors is an integer number (234600366).

Almost surely, 2^2578025500 is an apocalyptic number.

2578025500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578025500 is an abundant number, since it is smaller than the sum of its proper divisors (3052383284).

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

2578025500 is a wasteful number, since it uses less digits than its factorization.

2578025500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156070 (or 5156058 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 2578025500 is about 50774.2602112527. The cubic root of 2578025500 is about 1371.1839978569.

The spelling of 2578025500 in words is "two billion, five hundred seventy-eight million, twenty-five thousand, five hundred".