1325031040021 has 8 divisors (see below), whose sum is σ = 1436045401784. Its totient is φ = 1215315092160.

The previous prime is 1325031040013. The next prime is 1325031040043. The reversal of 1325031040021 is 1200401305231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57355460100 + 1267675579921 = 239490^2 + 1125911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1325031040021 - 2³ = 1325031040013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1325031039974 and 1325031040001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325031040321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324601350 + ... + 324605431.

It is an arithmetic number, because the mean of its divisors is an integer number (179505675223).

Almost surely, 2^{1325031040021} is an apocalyptic number.

It is an amenable number.

1325031040021 is a deficient number, since it is larger than the sum of its proper divisors (111014361763).

1325031040021 is a wasteful number, since it uses less digits than its factorization.

1325031040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649206951.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 1325031040021 its reverse (1200401305231), we get a palindrome (2525432345252).

The spelling of 1325031040021 in words is "one trillion, three hundred twenty-five billion, thirty-one million, forty thousand, twenty-one".