20371389825 has 12 divisors (see below), whose sum is σ = 33680697968. Its totient is φ = 10864741200.

The previous prime is 20371389761. The next prime is 20371389853. The reversal of 20371389825 is 52898317302.

It is a happy number.

It is not a de Polignac number, because 20371389825 - 2⁶ = 20371389761 is a prime.

It is a super-2 number, since 2×20371389825² (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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135809191 + ... + 135809340.

Almost surely, 2^20371389825 is an apocalyptic number.

20371389825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20371389825 is a deficient number, since it is larger than the sum of its proper divisors (13309308143).

20371389825 is a wasteful number, since it uses less digits than its factorization.

20371389825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271618544 (or 271618539 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 20371389825 in words is "twenty billion, three hundred seventy-one million, three hundred eighty-nine thousand, eight hundred twenty-five".