3128625 has 48 divisors (see below), whose sum is σ = 5905536. Its totient is φ = 1652400.

The previous prime is 3128623. The next prime is 3128633. The reversal of 3128625 is 5268213.

3128625 is a `hidden beast` number, since 31 + 2 + 8 + 625 = 666.

It is not a de Polignac number, because 3128625 - 2¹ = 3128623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3128623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30324 + ... + 30426.

It is an arithmetic number, because the mean of its divisors is an integer number (123032).

Almost surely, 2^3128625 is an apocalyptic number.

It is an amenable number.

3128625 is a deficient number, since it is larger than the sum of its proper divisors (2776911).

3128625 is an equidigital number, since it uses as much as digits as its factorization.

3128625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 111 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3128625 is about 1768.7919606330. The cubic root of 3128625 is about 146.2573960757.

The spelling of 3128625 in words is "three million, one hundred twenty-eight thousand, six hundred twenty-five".