1250215166 has 4 divisors (see below), whose sum is σ = 1875322752. Its totient is φ = 625107582.

The previous prime is 1250215159. The next prime is 1250215177. The reversal of 1250215166 is 6615120521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6615120521 = 17159 ⋅385519.

It is a super-2 number, since 2×1250215166² = 3126075922592815112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312553790 + ... + 312553793.

It is an arithmetic number, because the mean of its divisors is an integer number (468830688).

Almost surely, 2^1250215166 is an apocalyptic number.

1250215166 is a deficient number, since it is larger than the sum of its proper divisors (625107586).

1250215166 is an equidigital number, since it uses as much as digits as its factorization.

1250215166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625107585.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1250215166 is about 35358.3818351462. The cubic root of 1250215166 is about 1077.2791496158.

Adding to 1250215166 its reverse (6615120521), we get a palindrome (7865335687).

The spelling of 1250215166 in words is "one billion, two hundred fifty million, two hundred fifteen thousand, one hundred sixty-six".