4345225521 has 32 divisors (see below), whose sum is σ = 7134597120. Its totient is φ = 2290711104.

The previous prime is 4345225519. The next prime is 4345225523. The reversal of 4345225521 is 1255225434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4345225519) and next prime (4345225523).

It is not a de Polignac number, because 4345225521 - 2¹ = 4345225519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4345225523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 680140 + ... + 686498.

It is an arithmetic number, because the mean of its divisors is an integer number (222956160).

Almost surely, 2^4345225521 is an apocalyptic number.

It is an amenable number.

4345225521 is a deficient number, since it is larger than the sum of its proper divisors (2789371599).

4345225521 is a wasteful number, since it uses less digits than its factorization.

4345225521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885.

The product of its digits is 48000, while the sum is 33.

The square root of 4345225521 is about 65918.3246222172. The cubic root of 4345225521 is about 1631.8144474229.

The spelling of 4345225521 in words is "four billion, three hundred forty-five million, two hundred twenty-five thousand, five hundred twenty-one".