20231125542 has 80 divisors (see below), whose sum is σ = 47344318560. Its totient is φ = 6444966528.

The previous prime is 20231125531. The next prime is 20231125559. The reversal of 20231125542 is 24552113202.

20231125542 is a `hidden beast` number, since 2 + 0 + 2 + 3 + 112 + 5 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8453098 + ... + 8455490.

It is an arithmetic number, because the mean of its divisors is an integer number (591803982).

Almost surely, 2^20231125542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231125542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23672159280).

20231125542 is an abundant number, since it is smaller than the sum of its proper divisors (27113193018).

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

20231125542 is a wasteful number, since it uses less digits than its factorization.

20231125542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699 (or 4690 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 20231125542 its reverse (24552113202), we get a palindrome (44783238744).

The spelling of 20231125542 in words is "twenty billion, two hundred thirty-one million, one hundred twenty-five thousand, five hundred forty-two".