1165250026 has 4 divisors (see below), whose sum is σ = 1747875042. Its totient is φ = 582625012.

The previous prime is 1165249963. The next prime is 1165250063. The reversal of 1165250026 is 6200525611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1088670025 + 76580001 = 32995^2 + 8751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1165249976 and 1165250003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291312505 + ... + 291312508.

Almost surely, 2^1165250026 is an apocalyptic number.

1165250026 is a deficient number, since it is larger than the sum of its proper divisors (582625016).

1165250026 is an equidigital number, since it uses as much as digits as its factorization.

1165250026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582625015.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1165250026 is about 34135.7587582289. The cubic root of 1165250026 is about 1052.3003312254.

Adding to 1165250026 its reverse (6200525611), we get a palindrome (7365775637).

The spelling of 1165250026 in words is "one billion, one hundred sixty-five million, two hundred fifty thousand, twenty-six".