20125533002542 has 16 divisors (see below), whose sum is σ = 33027597268992. Its totient is φ = 9121606518520.

The previous prime is 20125533002429. The next prime is 20125533002543. The reversal of 20125533002542 is 24520033552102.

It is a junction number, because it is equal to n+sod(n) for n = 20125533002498 and 20125533002507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125533002543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1318143598 + ... + 1318158865.

It is an arithmetic number, because the mean of its divisors is an integer number (2064224829312).

Almost surely, 2^{20125533002542} is an apocalyptic number.

20125533002542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20125533002542 is a deficient number, since it is larger than the sum of its proper divisors (12902064266450).

20125533002542 is a wasteful number, since it uses less digits than its factorization.

20125533002542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636302823.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 20125533002542 its reverse (24520033552102), we get a palindrome (44645566554644).

The spelling of 20125533002542 in words is "twenty trillion, one hundred twenty-five billion, five hundred thirty-three million, two thousand, five hundred forty-two".