20038813825 has 12 divisors (see below), whose sum is σ = 25928483328. Its totient is φ = 15334048400.

The previous prime is 20038813811. The next prime is 20038813841. The reversal of 20038813825 is 52831883002.

It is not a de Polignac number, because 20038813825 - 2⁵ = 20038813793 is a prime.

It is a super-2 number, since 2×20038813825² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17424481 + ... + 17425630.

It is an arithmetic number, because the mean of its divisors is an integer number (2160706944).

Almost surely, 2^20038813825 is an apocalyptic number.

20038813825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20038813825 is a deficient number, since it is larger than the sum of its proper divisors (5889669503).

20038813825 is a wasteful number, since it uses less digits than its factorization.

20038813825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34850144 (or 34850139 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 20038813825 in words is "twenty billion, thirty-eight million, eight hundred thirteen thousand, eight hundred twenty-five".