20125115355 has 32 divisors (see below), whose sum is σ = 35269992000. Its totient is φ = 9753669632.

The previous prime is 20125115279. The next prime is 20125115357. The reversal of 20125115355 is 55351152102.

It is a cyclic number.

It is not a de Polignac number, because 20125115355 - 2⁸ = 20125115099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20125115357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1353330 + ... + 1368119.

It is an arithmetic number, because the mean of its divisors is an integer number (1102187250).

Almost surely, 2^20125115355 is an apocalyptic number.

20125115355 is a deficient number, since it is larger than the sum of its proper divisors (15144876645).

20125115355 is a wasteful number, since it uses less digits than its factorization.

20125115355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721503.

The product of its (nonzero) digits is 7500, while the sum is 30.

Adding to 20125115355 its reverse (55351152102), we get a palindrome (75476267457).

The spelling of 20125115355 in words is "twenty billion, one hundred twenty-five million, one hundred fifteen thousand, three hundred fifty-five".