1506625 has 16 divisors (see below), whose sum is σ = 1993680. Its totient is φ = 1132800.

The previous prime is 1506623. The next prime is 1506641. The reversal of 1506625 is 5266051.

It can be written as a sum of positive squares in 8 ways, for example, as 571536 + 935089 = 756^2 + 967^2 .

It is not a de Polignac number, because 1506625 - 2¹ = 1506623 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1506625.

It is not an unprimeable number, because it can be changed into a prime (1506623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 2479.

It is an arithmetic number, because the mean of its divisors is an integer number (124605).

2^1506625 is an apocalyptic number.

1506625 is the 709-th octagonal number.

It is an amenable number.

1506625 is a deficient number, since it is larger than the sum of its proper divisors (487055).

1506625 is an equidigital number, since it uses as much as digits as its factorization.

1506625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1506625 is about 1227.4465365139. The cubic root of 1506625 is about 114.6397041272.

The spelling of 1506625 in words is "one million, five hundred six thousand, six hundred twenty-five".