626521252 has 36 divisors (see below), whose sum is σ = 1281907200. Its totient is φ = 267143184.

The previous prime is 626521211. The next prime is 626521261. The reversal of 626521252 is 252125626.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30973 + ... + 47035.

Almost surely, 2^626521252 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 626521252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640953600).

626521252 is an abundant number, since it is smaller than the sum of its proper divisors (655385948).

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

626521252 is a wasteful number, since it uses less digits than its factorization.

626521252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16280 (or 16271 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 626521252 is about 25030.4065488358. The cubic root of 626521252 is about 855.6810924451.

Adding to 626521252 its reverse (252125626), we get a palindrome (878646878).

The spelling of 626521252 in words is "six hundred twenty-six million, five hundred twenty-one thousand, two hundred fifty-two".