625145 has 4 divisors (see below), whose sum is σ = 750180. Its totient is φ = 500112.

The previous prime is 625133. The next prime is 625169. The reversal of 625145 is 541526.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541526 = 2 ⋅270763.

It can be written as a sum of positive squares in 2 ways, for example, as 284089 + 341056 = 533^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 625145 - 2⁴ = 625129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 625145.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 62510 + ... + 62519.

It is an arithmetic number, because the mean of its divisors is an integer number (187545).

2⁶²⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

625145 is a deficient number, since it is larger than the sum of its proper divisors (125035).

625145 is a wasteful number, since it uses less digits than its factorization.

625145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125034.

The product of its digits is 1200, while the sum is 23.

The square root of 625145 is about 790.6611157759. The cubic root of 625145 is about 85.5054087296.

The spelling of 625145 in words is "six hundred twenty-five thousand, one hundred forty-five".