4525306421 has 4 divisors (see below), whose sum is σ = 4681351500. Its totient is φ = 4369261344.

The previous prime is 4525306403. The next prime is 4525306439. The reversal of 4525306421 is 1246035254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1246035254 = 2 ⋅623017627.

It is an interprime number because it is at equal distance from previous prime (4525306403) and next prime (4525306439).

It can be written as a sum of positive squares in 2 ways, for example, as 1610818225 + 2914488196 = 40135^2 + 53986^2 .

It is a cyclic number.

It is not a de Polignac number, because 4525306421 - 2¹⁰ = 4525305397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4525306441) 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 3 ways as a sum of consecutive naturals, for example, 78022496 + ... + 78022553.

It is an arithmetic number, because the mean of its divisors is an integer number (1170337875).

Almost surely, 2^4525306421 is an apocalyptic number.

It is an amenable number.

4525306421 is a deficient number, since it is larger than the sum of its proper divisors (156045079).

4525306421 is a wasteful number, since it uses less digits than its factorization.

4525306421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156045078.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 4525306421 is about 67270.3978061673. The cubic root of 4525306421 is about 1654.0526544961.

The spelling of 4525306421 in words is "four billion, five hundred twenty-five million, three hundred six thousand, four hundred twenty-one".