1491625 has 8 divisors (see below), whose sum is σ = 1861704. Its totient is φ = 1193200.

The previous prime is 1491601. The next prime is 1491629. The reversal of 1491625 is 5261941.

It can be written as a sum of positive squares in 4 ways, for example, as 784 + 1490841 = 28^2 + 1221^2 .

It is not a de Polignac number, because 1491625 - 2¹¹ = 1489577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1491593 and 1491602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5842 + ... + 6091.

It is an arithmetic number, because the mean of its divisors is an integer number (232713).

2^1491625 is an apocalyptic number.

It is an amenable number.

1491625 is a deficient number, since it is larger than the sum of its proper divisors (370079).

1491625 is an equidigital number, since it uses as much as digits as its factorization.

1491625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948 (or 11938 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 1491625 is about 1221.3210061241. The cubic root of 1491625 is about 114.2579824826.

It can be divided in two parts, 14916 and 25, that added together give a palindrome (14941).

The spelling of 1491625 in words is "one million, four hundred ninety-one thousand, six hundred twenty-five".