7420525220 has 96 divisors (see below), whose sum is σ = 16689062880. Its totient is φ = 2766274560.

The previous prime is 7420525219. The next prime is 7420525243. The reversal of 7420525220 is 225250247.

It can be written as a sum of positive squares in 16 ways, for example, as 1868487076 + 5552038144 = 43226^2 + 74512^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2305052 + ... + 2308268.

It is an arithmetic number, because the mean of its divisors is an integer number (173844405).

Almost surely, 2^7420525220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7420525220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8344531440).

7420525220 is an abundant number, since it is smaller than the sum of its proper divisors (9268537660).

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

7420525220 is a wasteful number, since it uses less digits than its factorization.

7420525220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 7420525220 is about 86142.4704776918. The cubic root of 7420525220 is about 1950.4951817164.

Adding to 7420525220 its reverse (225250247), we get a palindrome (7645775467).

The spelling of 7420525220 in words is "seven billion, four hundred twenty million, five hundred twenty-five thousand, two hundred twenty".