7852455220 has 12 divisors (see below), whose sum is σ = 16490156004. Its totient is φ = 3140982080.

The previous prime is 7852455209. The next prime is 7852455253. The reversal of 7852455220 is 225542587.

It can be written as a sum of positive squares in 2 ways, for example, as 1504508944 + 6347946276 = 38788^2 + 79674^2 .

It is a super-2 number, since 2×7852455220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196311361 + ... + 196311400.

It is an arithmetic number, because the mean of its divisors is an integer number (1374179667).

Almost surely, 2^7852455220 is an apocalyptic number.

It is an amenable number.

7852455220 is an abundant number, since it is smaller than the sum of its proper divisors (8637700784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7852455220 is a wasteful number, since it uses less digits than its factorization.

7852455220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392622770 (or 392622768 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 7852455220 is about 88614.0802581621. The cubic root of 7852455220 is about 1987.6282291119.

The spelling of 7852455220 in words is "seven billion, eight hundred fifty-two million, four hundred fifty-five thousand, two hundred twenty".