25405065042 has 16 divisors (see below), whose sum is σ = 58068720192. Its totient is φ = 7258590000.

The previous prime is 25405064987. The next prime is 25405065067. The reversal of 25405065042 is 24056050452.

It is a junction number, because it is equal to n+sod(n) for n = 25405064994 and 25405065012.

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, 302441209 + ... + 302441292.

It is an arithmetic number, because the mean of its divisors is an integer number (3629295012).

Almost surely, 2^25405065042 is an apocalyptic number.

25405065042 is an abundant number, since it is smaller than the sum of its proper divisors (32663655150).

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

25405065042 is a wasteful number, since it uses less digits than its factorization.

25405065042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604882513.

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 25405065042 in words is "twenty-five billion, four hundred five million, sixty-five thousand, forty-two".