2001255445 has 16 divisors (see below), whose sum is σ = 2818758528. Its totient is φ = 1335199680.

The previous prime is 2001255439. The next prime is 2001255463. The reversal of 2001255445 is 5445521002.

It is not a de Polignac number, because 2001255445 - 2¹⁷ = 2001124373 is a prime.

It is a super-2 number, since 2×2001255445² = 8010046712284296050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771391 + ... + 773980.

It is an arithmetic number, because the mean of its divisors is an integer number (176172408).

Almost surely, 2^2001255445 is an apocalyptic number.

It is an amenable number.

2001255445 is a deficient number, since it is larger than the sum of its proper divisors (817503083).

2001255445 is a wasteful number, since it uses less digits than its factorization.

2001255445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545420.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2001255445 is about 44735.3936497713. The cubic root of 2001255445 is about 1260.1846216830.

Adding to 2001255445 its reverse (5445521002), we get a palindrome (7446776447).

It can be divided in two parts, 20012 and 55445, that added together give a palindrome (75457).

The spelling of 2001255445 in words is "two billion, one million, two hundred fifty-five thousand, four hundred forty-five".