625505616 has 60 divisors (see below), whose sum is σ = 1853527572. Its totient is φ = 196236288.

The previous prime is 625505597. The next prime is 625505641. The reversal of 625505616 is 616505526.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 469155600 + 156350016 = 21660^2 + 12504^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 125311 + ... + 130206.

Almost surely, 2^625505616 is an apocalyptic number.

It is an amenable number.

625505616 is an abundant number, since it is smaller than the sum of its proper divisors (1228021956).

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

625505616 is a wasteful number, since it uses less digits than its factorization.

625505616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255548 (or 255539 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 625505616 is about 25010.1102756465. The cubic root of 625505616 is about 855.2184688465.

The spelling of 625505616 in words is "six hundred twenty-five million, five hundred five thousand, six hundred sixteen".