4525018821 has 12 divisors (see below), whose sum is σ = 6538148448. Its totient is φ = 3015751464.

The previous prime is 4525018811. The next prime is 4525018829. The reversal of 4525018821 is 1288105254.

4525018821 is a `hidden beast` number, since 4 + 52 + 501 + 88 + 21 = 666.

It is not a de Polignac number, because 4525018821 - 2¹⁰ = 4525017797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4525018829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45745 + ... + 105558.

It is an arithmetic number, because the mean of its divisors is an integer number (544845704).

Almost surely, 2^4525018821 is an apocalyptic number.

It is an amenable number.

4525018821 is a deficient number, since it is larger than the sum of its proper divisors (2013129627).

4525018821 is a wasteful number, since it uses less digits than its factorization.

4525018821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154632 (or 154629 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 4525018821 is about 67268.2601306143. The cubic root of 4525018821 is about 1654.0176133610.

The spelling of 4525018821 in words is "four billion, five hundred twenty-five million, eighteen thousand, eight hundred twenty-one".