1165625 has 12 divisors (see below), whose sum is σ = 1460844. Its totient is φ = 930000.

The previous prime is 1165583. The next prime is 1165643. The reversal of 1165625 is 5265611.

It can be written as a sum of positive squares in 6 ways, for example, as 942841 + 222784 = 971^2 + 472^2 .

It is not a de Polignac number, because 1165625 - 2¹² = 1161529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1165594 and 1165603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2939 + ... + 3311.

It is an arithmetic number, because the mean of its divisors is an integer number (121737).

2^1165625 is an apocalyptic number.

It is an amenable number.

1165625 is a deficient number, since it is larger than the sum of its proper divisors (295219).

1165625 is an frugal number, since it uses more digits than its factorization.

1165625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 378 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1165625 is about 1079.6411440845. The cubic root of 1165625 is about 105.2413194828.

The spelling of 1165625 in words is "one million, one hundred sixty-five thousand, six hundred twenty-five".