647125 has 16 divisors (see below), whose sum is σ = 838656. Its totient is φ = 498000.

The previous prime is 647117. The next prime is 647131. The reversal of 647125 is 521746.

It is not a de Polignac number, because 647125 - 2³ = 647117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 647125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3792 + ... + 3958.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2⁶⁴⁷¹²⁵ is an apocalyptic number.

It is an amenable number.

647125 is a deficient number, since it is larger than the sum of its proper divisors (191531).

647125 is a wasteful number, since it uses less digits than its factorization.

647125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 203 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 647125 is about 804.4407995620. The cubic root of 647125 is about 86.4960070328.

The spelling of 647125 in words is "six hundred forty-seven thousand, one hundred twenty-five".