625545 has 12 divisors (see below), whose sum is σ = 1084356. Its totient is φ = 333600.

The previous prime is 625543. The next prime is 625589. The reversal of 625545 is 545526.

625545 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 2 ways, for example, as 374544 + 251001 = 612^2 + 501^2 .

It is not a de Polignac number, because 625545 - 2¹ = 625543 is a prime.

It is an Ulam number.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625545.

It is not an unprimeable number, because it can be changed into a prime (625543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6906 + ... + 6995.

It is an arithmetic number, because the mean of its divisors is an integer number (90363).

2⁶²⁵⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

625545 is a deficient number, since it is larger than the sum of its proper divisors (458811).

625545 is a wasteful number, since it uses less digits than its factorization.

625545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13912 (or 13909 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 625545 is about 790.9140281978. The cubic root of 625545 is about 85.5236417642.

The spelling of 625545 in words is "six hundred twenty-five thousand, five hundred forty-five".