625221460 has 12 divisors (see below), whose sum is σ = 1312965108. Its totient is φ = 250088576.

The previous prime is 625221451. The next prime is 625221463. The reversal of 625221460 is 64122526.

It can be written as a sum of positive squares in 2 ways, for example, as 116899344 + 508322116 = 10812^2 + 22546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625221463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15630517 + ... + 15630556.

It is an arithmetic number, because the mean of its divisors is an integer number (109413759).

Almost surely, 2^625221460 is an apocalyptic number.

It is an amenable number.

625221460 is an abundant number, since it is smaller than the sum of its proper divisors (687743648).

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

625221460 is a wasteful number, since it uses less digits than its factorization.

625221460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31261082 (or 31261080 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 625221460 is about 25004.4288077132. The cubic root of 625221460 is about 855.0889457527.

Adding to 625221460 its reverse (64122526), we get a palindrome (689343986).

It can be divided in two parts, 625221 and 460, that added together give a square (625681 = 791²).

The spelling of 625221460 in words is "six hundred twenty-five million, two hundred twenty-one thousand, four hundred sixty".