25573405040 has 20 divisors (see below), whose sum is σ = 59458166904. Its totient is φ = 10229361984.

The previous prime is 25573405021. The next prime is 25573405097. The reversal of 25573405040 is 4050437552.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159833702 + ... + 159833861.

Almost surely, 2^25573405040 is an apocalyptic number.

25573405040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25573405040 is an abundant number, since it is smaller than the sum of its proper divisors (33884761864).

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

25573405040 is a wasteful number, since it uses less digits than its factorization.

25573405040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319667576 (or 319667570 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 35.

The spelling of 25573405040 in words is "twenty-five billion, five hundred seventy-three million, four hundred five thousand, forty".