4525555521 has 4 divisors (see below), whose sum is σ = 6034074032. Its totient is φ = 3017037012.

The previous prime is 4525555519. The next prime is 4525555537. The reversal of 4525555521 is 1255555254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4525555521 - 2¹ = 4525555519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4525555521.

It is not an unprimeable number, because it can be changed into a prime (4525555621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754259251 + ... + 754259256.

It is an arithmetic number, because the mean of its divisors is an integer number (1508518508).

Almost surely, 2^4525555521 is an apocalyptic number.

It is an amenable number.

4525555521 is a deficient number, since it is larger than the sum of its proper divisors (1508518511).

4525555521 is a wasteful number, since it uses less digits than its factorization.

4525555521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508518510.

The product of its digits is 250000, while the sum is 39.

The square root of 4525555521 is about 67272.2492637194. The cubic root of 4525555521 is about 1654.0830035980.

It can be divided in two parts, 4 and 525555521, that added together give a palindrome (525555525).

The spelling of 4525555521 in words is "four billion, five hundred twenty-five million, five hundred fifty-five thousand, five hundred twenty-one".