20525053555 has 16 divisors (see below), whose sum is σ = 24759874944. Its totient is φ = 16333695360.

The previous prime is 20525053537. The next prime is 20525053603. The reversal of 20525053555 is 55535052502.

It is a happy number.

It is not a de Polignac number, because 20525053555 - 2¹³ = 20525045363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 873217 + ... + 896413.

It is an arithmetic number, because the mean of its divisors is an integer number (1547492184).

Almost surely, 2^20525053555 is an apocalyptic number.

20525053555 is a deficient number, since it is larger than the sum of its proper divisors (4234821389).

20525053555 is a wasteful number, since it uses less digits than its factorization.

20525053555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24126.

The product of its (nonzero) digits is 187500, while the sum is 37.

The spelling of 20525053555 in words is "twenty billion, five hundred twenty-five million, fifty-three thousand, five hundred fifty-five".