2505460021 has 8 divisors (see below), whose sum is σ = 2649362688. Its totient is φ = 2365500000.

The previous prime is 2505459977. The next prime is 2505460031. The reversal of 2505460021 is 1200645052.

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

It is a cyclic number.

It is not a de Polignac number, because 2505460021 - 2¹¹ = 2505457973 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 (2505460031) 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, 984355 + ... + 986896.

It is an arithmetic number, because the mean of its divisors is an integer number (331170336).

Almost surely, 2^2505460021 is an apocalyptic number.

It is an amenable number.

2505460021 is a deficient number, since it is larger than the sum of its proper divisors (143902667).

2505460021 is a wasteful number, since it uses less digits than its factorization.

2505460021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971323.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2505460021 is about 50054.5704306810. The cubic root of 2505460021 is about 1358.1961416771.

The spelling of 2505460021 in words is "two billion, five hundred five million, four hundred sixty thousand, twenty-one".