1325145001 has 4 divisors (see below), whose sum is σ = 1328450004. Its totient is φ = 1321840000.

The previous prime is 1325144999. The next prime is 1325145013. The reversal of 1325145001 is 1005415231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 942551401 + 382593600 = 30701^2 + 19560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325145001 - 2¹ = 1325144999 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325145071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651900 + ... + 1652701.

It is an arithmetic number, because the mean of its divisors is an integer number (332112501).

Almost surely, 2^1325145001 is an apocalyptic number.

It is an amenable number.

1325145001 is a deficient number, since it is larger than the sum of its proper divisors (3305003).

1325145001 is an equidigital number, since it uses as much as digits as its factorization.

1325145001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305002.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1325145001 is about 36402.5411338275. The cubic root of 1325145001 is about 1098.3846817299.

The spelling of 1325145001 in words is "one billion, three hundred twenty-five million, one hundred forty-five thousand, one".