20125115424 has 36 divisors (see below), whose sum is σ = 57230797806. Its totient is φ = 6708371712.

The previous prime is 20125115411. The next prime is 20125115467. The reversal of 20125115424 is 42451152102.

It is a happy number.

20125115424 is a `hidden beast` number, since 2 + 0 + 125 + 115 + 424 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15830672400 + 4294443024 = 125820^2 + 65532^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34939149 + ... + 34939724.

Almost surely, 2^20125115424 is an apocalyptic number.

20125115424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20125115424 is an abundant number, since it is smaller than the sum of its proper divisors (37105682382).

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

20125115424 is a wasteful number, since it uses less digits than its factorization.

20125115424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69878889 (or 69878878 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 20125115424 its reverse (42451152102), we get a palindrome (62576267526).

The spelling of 20125115424 in words is "twenty billion, one hundred twenty-five million, one hundred fifteen thousand, four hundred twenty-four".