25454578604 has 72 divisors (see below), whose sum is σ = 56857480848. Its totient is φ = 9879891840.

The previous prime is 25454578537. The next prime is 25454578619. The reversal of 25454578604 is 40687545452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40799 + ... + 229289.

It is an arithmetic number, because the mean of its divisors is an integer number (789687234).

Almost surely, 2^25454578604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25454578604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28428740424).

25454578604 is an abundant number, since it is smaller than the sum of its proper divisors (31402902244).

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

25454578604 is a wasteful number, since it uses less digits than its factorization.

25454578604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188575 (or 188566 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 50.

The spelling of 25454578604 in words is "twenty-five billion, four hundred fifty-four million, five hundred seventy-eight thousand, six hundred four".