25320520042 has 8 divisors (see below), whose sum is σ = 38002377600. Its totient is φ = 12653060844.

The previous prime is 25320520037. The next prime is 25320520051. The reversal of 25320520042 is 24002502352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25320520042² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25320519989 and 25320520016.

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 3 ways as a sum of consecutive naturals, for example, 3595192 + ... + 3602227.

It is an arithmetic number, because the mean of its divisors is an integer number (4750297200).

Almost surely, 2^25320520042 is an apocalyptic number.

25320520042 is a deficient number, since it is larger than the sum of its proper divisors (12681857558).

25320520042 is a wasteful number, since it uses less digits than its factorization.

25320520042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199180.

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 25320520042 in words is "twenty-five billion, three hundred twenty million, five hundred twenty thousand, forty-two".