1325240001 has 24 divisors (see below), whose sum is σ = 1989560160. Its totient is φ = 871713792.

The previous prime is 1325239997. The next prime is 1325240009. The reversal of 1325240001 is 1000425231.

1325240001 is a `hidden beast` number, since 13 + 252 + 400 + 0 + 1 = 666.

It is not a de Polignac number, because 1325240001 - 2² = 1325239997 is a prime.

It is a super-2 number, since 2×1325240001² = 3512522120500960002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1325240009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1722945 + ... + 1723713.

It is an arithmetic number, because the mean of its divisors is an integer number (82898340).

Almost surely, 2^1325240001 is an apocalyptic number.

It is an amenable number.

1325240001 is a deficient number, since it is larger than the sum of its proper divisors (664320159).

1325240001 is an frugal number, since it uses more digits than its factorization.

1325240001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1325240001 is about 36403.8459644033. The cubic root of 1325240001 is about 1098.4109289333.

Adding to 1325240001 its reverse (1000425231), we get a palindrome (2325665232).

The spelling of 1325240001 in words is "one billion, three hundred twenty-five million, two hundred forty thousand, one".