25920939433 has 8 divisors (see below), whose sum is σ = 26024296320. Its totient is φ = 25817639760.

The previous prime is 25920939391. The next prime is 25920939467. The reversal of 25920939433 is 33493902952.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25920939433 is a prime.

It is a super-2 number, since 2×25920939433² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25920939493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049298 + ... + 1073716.

It is an arithmetic number, because the mean of its divisors is an integer number (3253037040).

Almost surely, 2^25920939433 is an apocalyptic number.

It is an amenable number.

25920939433 is a deficient number, since it is larger than the sum of its proper divisors (103356887).

25920939433 is a wasteful number, since it uses less digits than its factorization.

25920939433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28607.

The product of its (nonzero) digits is 1574640, while the sum is 49.

The spelling of 25920939433 in words is "twenty-five billion, nine hundred twenty million, nine hundred thirty-nine thousand, four hundred thirty-three".