20124555525 has 144 divisors (see below), whose sum is σ = 38396292480. Its totient is φ = 10055232000.

The previous prime is 20124555427. The next prime is 20124555557. The reversal of 20124555525 is 52555542102.

20124555525 is a `hidden beast` number, since 2 + 0 + 124 + 5 + 5 + 5 + 525 = 666.

It is not a de Polignac number, because 20124555525 - 2¹⁶ = 20124489989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20124555525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 72651687 + ... + 72651963.

It is an arithmetic number, because the mean of its divisors is an integer number (266640920).

Almost surely, 2^20124555525 is an apocalyptic number.

20124555525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20124555525 is a deficient number, since it is larger than the sum of its proper divisors (18271736955).

20124555525 is a wasteful number, since it uses less digits than its factorization.

20124555525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 20124555525 in words is "twenty billion, one hundred twenty-four million, five hundred fifty-five thousand, five hundred twenty-five".