1191025 has 24 divisors (see below), whose sum is σ = 1660608. Its totient is φ = 840000.

The previous prime is 1191019. The next prime is 1191031. The reversal of 1191025 is 5201911.

It is an interprime number because it is at equal distance from previous prime (1191019) and next prime (1191031).

It is not a de Polignac number, because 1191025 - 2⁷ = 1190897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1190993 and 1191011.

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, 16740 + ... + 16810.

It is an arithmetic number, because the mean of its divisors is an integer number (69192).

2^1191025 is an apocalyptic number.

It is an amenable number.

1191025 is a deficient number, since it is larger than the sum of its proper divisors (469583).

1191025 is a wasteful number, since it uses less digits than its factorization.

1191025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1191025 is about 1091.3409183202. The cubic root of 1191025 is about 106.0002669983. Note that the first 3 decimals are identical.

Adding to 1191025 its reverse (5201911), we get a palindrome (6392936).

It can be divided in two parts, 11910 and 25, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 1191025 in words is "one million, one hundred ninety-one thousand, twenty-five".