25933130838 has 24 divisors (see below), whose sum is σ = 57495160008. Its totient is φ = 8443344672.

The previous prime is 25933130831. The next prime is 25933130917. The reversal of 25933130838 is 83803133952.

25933130838 is a `hidden beast` number, since 2 + 5 + 9 + 331 + 308 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25933130793 and 25933130802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25933130831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16751895 + ... + 16753442.

It is an arithmetic number, because the mean of its divisors is an integer number (2395631667).

Almost surely, 2^25933130838 is an apocalyptic number.

25933130838 is an abundant number, since it is smaller than the sum of its proper divisors (31562029170).

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

25933130838 is a wasteful number, since it uses less digits than its factorization.

25933130838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33505388 (or 33505385 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 25933130838 in words is "twenty-five billion, nine hundred thirty-three million, one hundred thirty thousand, eight hundred thirty-eight".