4525692921 has 6 divisors (see below), whose sum is σ = 6537112010. Its totient is φ = 3017128608.

The previous prime is 4525692917. The next prime is 4525692923. The reversal of 4525692921 is 1292965254.

4525692921 is a `hidden beast` number, since 45 + 2 + 569 + 29 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4505765625 + 19927296 = 67125^2 + 4464^2 .

It is not a de Polignac number, because 4525692921 - 2² = 4525692917 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4525692923) 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 5 ways as a sum of consecutive naturals, for example, 251427376 + ... + 251427393.

Almost surely, 2^4525692921 is an apocalyptic number.

It is an amenable number.

4525692921 is a deficient number, since it is larger than the sum of its proper divisors (2011419089).

4525692921 is a wasteful number, since it uses less digits than its factorization.

4525692921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502854775 (or 502854772 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 4525692921 is about 67273.2704794408. The cubic root of 4525692921 is about 1654.0997432523.

The spelling of 4525692921 in words is "four billion, five hundred twenty-five million, six hundred ninety-two thousand, nine hundred twenty-one".