20525134355 has 8 divisors (see below), whose sum is σ = 26869266864. Its totient is φ = 14927370400.

The previous prime is 20525134349. The next prime is 20525134387. The reversal of 20525134355 is 55343152502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20525134355 - 2⁸ = 20525134099 is a prime.

It is a super-2 number, since 2×20525134355² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186592076 + ... + 186592185.

It is an arithmetic number, because the mean of its divisors is an integer number (3358658358).

Almost surely, 2^20525134355 is an apocalyptic number.

20525134355 is a deficient number, since it is larger than the sum of its proper divisors (6344132509).

20525134355 is a wasteful number, since it uses less digits than its factorization.

20525134355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373184277.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 20525134355 its reverse (55343152502), we get a palindrome (75868286857).

The spelling of 20525134355 in words is "twenty billion, five hundred twenty-five million, one hundred thirty-four thousand, three hundred fifty-five".