550571420025 has 135 divisors (see below), whose sum is σ = 1121738924383. Its totient is φ = 266765637600.

The previous prime is 550571420017. The next prime is 550571420029. The reversal of 550571420025 is 520024175055.

The square root of 550571420025 is 742005.

It is a perfect power (a square), and thus also a powerful number.

550571420025 is a `hidden beast` number, since 5 + 505 + 7 + 142 + 0 + 0 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 198205711209 + 352365708816 = 445203^2 + 593604^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 550571420025 - 2³ = 550571420017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550571420029) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 367291726 + ... + 367293224.

Almost surely, 2^550571420025 is an apocalyptic number.

550571420025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

550571420025 is the 742005-th square number.

550571420025 is the 371003-rd centered octagonal number.

It is an amenable number.

550571420025 is an abundant number, since it is smaller than the sum of its proper divisors (571167504358).

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

550571420025 is an equidigital number, since it uses as much as digits as its factorization.

550571420025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

Multiplying 550571420025 by its sum of digits (36), we get a square (19820571120900 = 4452030²).

The spelling of 550571420025 in words is "five hundred fifty billion, five hundred seventy-one million, four hundred twenty thousand, twenty-five".