1326125055 has 32 divisors (see below), whose sum is σ = 2167718400. Its totient is φ = 692081280.

The previous prime is 1326125041. The next prime is 1326125057. The reversal of 1326125055 is 5505216231.

It is a happy number.

It is a Cunningham number, because it is equal to 36416²-1.

It is not a de Polignac number, because 1326125055 - 2⁴ = 1326125039 is a prime.

It is a super-2 number, since 2×1326125055² = 3517215322997506050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326125057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178444 + ... + 185726.

It is an arithmetic number, because the mean of its divisors is an integer number (67741200).

Almost surely, 2^1326125055 is an apocalyptic number.

1326125055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1326125055 is a deficient number, since it is larger than the sum of its proper divisors (841593345).

1326125055 is a wasteful number, since it uses less digits than its factorization.

1326125055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7551.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1326125055 is about 36415.9999862698. Note that the first 4 decimals coincide. The cubic root of 1326125055 is about 1098.6553970172.

The spelling of 1326125055 in words is "one billion, three hundred twenty-six million, one hundred twenty-five thousand, fifty-five".