625505563 has 8 divisors (see below), whose sum is σ = 653672448. Its totient is φ = 597957864.

The previous prime is 625505557. The next prime is 625505579. The reversal of 625505563 is 365505526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625505563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625505533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152731 + ... + 156772.

It is an arithmetic number, because the mean of its divisors is an integer number (81709056).

Almost surely, 2^625505563 is an apocalyptic number.

625505563 is a deficient number, since it is larger than the sum of its proper divisors (28166885).

625505563 is a wasteful number, since it uses less digits than its factorization.

625505563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309593.

The product of its (nonzero) digits is 135000, while the sum is 37.

The square root of 625505563 is about 25010.1092160750. The cubic root of 625505563 is about 855.2184446919.

Subtracting from 625505563 its sum of digits (37), we obtain a palindrome (625505526).

The spelling of 625505563 in words is "six hundred twenty-five million, five hundred five thousand, five hundred sixty-three".