20112442525 has 24 divisors (see below), whose sum is σ = 28507572224. Its totient is φ = 13788792000.

The previous prime is 20112442513. The next prime is 20112442531. The reversal of 20112442525 is 52524421102.

It is a happy number.

It is not a de Polignac number, because 20112442525 - 2¹⁹ = 20111918237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112442493 and 20112442502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1628875 + ... + 1641175.

Almost surely, 2^20112442525 is an apocalyptic number.

20112442525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20112442525 is a deficient number, since it is larger than the sum of its proper divisors (8395129699).

20112442525 is a wasteful number, since it uses less digits than its factorization.

20112442525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21661 (or 21656 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 20112442525 its reverse (52524421102), we get a palindrome (72636863627).

The spelling of 20112442525 in words is "twenty billion, one hundred twelve million, four hundred forty-two thousand, five hundred twenty-five".