2001425453 has 4 divisors (see below), whose sum is σ = 2119156380. Its totient is φ = 1883694528.

The previous prime is 2001425449. The next prime is 2001425471. The reversal of 2001425453 is 3545241002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3545241002 = 2 ⋅1772620501.

It can be written as a sum of positive squares in 2 ways, for example, as 626350729 + 1375074724 = 25027^2 + 37082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001425453 - 2² = 2001425449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001425473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58865438 + ... + 58865471.

It is an arithmetic number, because the mean of its divisors is an integer number (529789095).

Almost surely, 2^2001425453 is an apocalyptic number.

It is an amenable number.

2001425453 is a deficient number, since it is larger than the sum of its proper divisors (117730927).

2001425453 is a wasteful number, since it uses less digits than its factorization.

2001425453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117730926.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2001425453 is about 44737.2937603517. The cubic root of 2001425453 is about 1260.2203051838.

Adding to 2001425453 its reverse (3545241002), we get a palindrome (5546666455).

The spelling of 2001425453 in words is "two billion, one million, four hundred twenty-five thousand, four hundred fifty-three".