25828578450 has 72 divisors (see below), whose sum is σ = 71631296256. Its totient is φ = 6665436000.

The previous prime is 25828578443. The next prime is 25828578463. The reversal of 25828578450 is 5487582852.

25828578450 is a `hidden beast` number, since 2 + 5 + 8 + 28 + 578 + 45 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 911806 + ... + 939705.

Almost surely, 2^25828578450 is an apocalyptic number.

25828578450 is an abundant number, since it is smaller than the sum of its proper divisors (45802717806).

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

25828578450 is a wasteful number, since it uses less digits than its factorization.

25828578450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851560 (or 1851552 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 54.

The spelling of 25828578450 in words is "twenty-five billion, eight hundred twenty-eight million, five hundred seventy-eight thousand, four hundred fifty".