1265161 has 8 divisors (see below), whose sum is σ = 1341504. Its totient is φ = 1190640.

The previous prime is 1265129. The next prime is 1265167. The reversal of 1265161 is 1615621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1265161 - 2⁵ = 1265129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265167) 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, 1131 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (167688).

2^1265161 is an apocalyptic number.

It is an amenable number.

1265161 is a deficient number, since it is larger than the sum of its proper divisors (76343).

1265161 is an equidigital number, since it uses as much as digits as its factorization.

1265161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its digits is 360, while the sum is 22.

The square root of 1265161 is about 1124.7937588732. The cubic root of 1265161 is about 108.1554973168.

The spelling of 1265161 in words is "one million, two hundred sixty-five thousand, one hundred sixty-one".