1325623166 has 24 divisors (see below), whose sum is σ = 2314385136. Its totient is φ = 567803040.

The previous prime is 1325623163. The next prime is 1325623183. The reversal of 1325623166 is 6613265231.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325623163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269711 + ... + 274581.

It is an arithmetic number, because the mean of its divisors is an integer number (96432714).

Almost surely, 2^1325623166 is an apocalyptic number.

1325623166 is a deficient number, since it is larger than the sum of its proper divisors (988761970).

1325623166 is a wasteful number, since it uses less digits than its factorization.

1325623166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664 (or 7657 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 1325623166 is about 36409.1082835051. The cubic root of 1325623166 is about 1098.5167794630.

Adding to 1325623166 its reverse (6613265231), we get a palindrome (7938888397).

The spelling of 1325623166 in words is "one billion, three hundred twenty-five million, six hundred twenty-three thousand, one hundred sixty-six".