625517380 has 72 divisors (see below), whose sum is σ = 1440827136. Its totient is φ = 227827200.

The previous prime is 625517323. The next prime is 625517381. The reversal of 625517380 is 83715526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625517381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177435 + ... + 180925.

It is an arithmetic number, because the mean of its divisors is an integer number (20011488).

Almost surely, 2^625517380 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 625517380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720413568).

625517380 is an abundant number, since it is smaller than the sum of its proper divisors (815309756).

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

625517380 is a wasteful number, since it uses less digits than its factorization.

625517380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 625517380 is about 25010.3454594294. The cubic root of 625517380 is about 855.2238302303.

The spelling of 625517380 in words is "six hundred twenty-five million, five hundred seventeen thousand, three hundred eighty".