1181425 has 24 divisors (see below), whose sum is σ = 1724096. Its totient is φ = 786240.

The previous prime is 1181413. The next prime is 1181437. The reversal of 1181425 is 5241811.

It is an interprime number because it is at equal distance from previous prime (1181413) and next prime (1181437).

It is not a de Polignac number, because 1181425 - 2⁹ = 1180913 is a prime.

It is a Duffinian number.

1181425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1181396 and 1181405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7447 + ... + 7603.

2^1181425 is an apocalyptic number.

It is an amenable number.

1181425 is a deficient number, since it is larger than the sum of its proper divisors (542671).

1181425 is a wasteful number, since it uses less digits than its factorization.

1181425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 212 counting only the distinct ones).

The product of its digits is 320, while the sum is 22.

The square root of 1181425 is about 1086.9337606313. The cubic root of 1181425 is about 105.7147009445.

The spelling of 1181425 in words is "one million, one hundred eighty-one thousand, four hundred twenty-five".