1325045506 has 4 divisors (see below), whose sum is σ = 1987568262. Its totient is φ = 662522752.

The previous prime is 1325045459. The next prime is 1325045507. The reversal of 1325045506 is 6055405231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6055405231 = 11071 ⋅546961.

It can be written as a sum of positive squares in only one way, i.e., 1151991481 + 173054025 = 33941^2 + 13155^2 .

It is not an unprimeable number, because it can be changed into a prime (1325045507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331261375 + ... + 331261378.

Almost surely, 2^1325045506 is an apocalyptic number.

1325045506 is a deficient number, since it is larger than the sum of its proper divisors (662522756).

1325045506 is an equidigital number, since it uses as much as digits as its factorization.

1325045506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662522755.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 1325045506 is about 36401.1745140181. The cubic root of 1325045506 is about 1098.3571912744.

The spelling of 1325045506 in words is "one billion, three hundred twenty-five million, forty-five thousand, five hundred six".