625542220 has 12 divisors (see below), whose sum is σ = 1313638704. Its totient is φ = 250216880.

The previous prime is 625542191. The next prime is 625542221. The reversal of 625542220 is 22245526.

It is not an unprimeable number, because it can be changed into a prime (625542221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15638536 + ... + 15638575.

It is an arithmetic number, because the mean of its divisors is an integer number (109469892).

Almost surely, 2^625542220 is an apocalyptic number.

It is an amenable number.

625542220 is an abundant number, since it is smaller than the sum of its proper divisors (688096484).

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

625542220 is a wasteful number, since it uses less digits than its factorization.

625542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31277120 (or 31277118 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 625542220 is about 25010.8420489995. The cubic root of 625542220 is about 855.2351507145.

Adding to 625542220 its reverse (22245526), we get a palindrome (647787746).

The spelling of 625542220 in words is "six hundred twenty-five million, five hundred forty-two thousand, two hundred twenty".