2421820725 has 24 divisors (see below), whose sum is σ = 4026221472. Its totient is φ = 1284494400.

The previous prime is 2421820717. The next prime is 2421820757. The reversal of 2421820725 is 5270281242.

It is not a de Polignac number, because 2421820725 - 2³ = 2421820717 is a prime.

It is a super-3 number, since 3×2421820725³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75627 + ... + 102776.

It is an arithmetic number, because the mean of its divisors is an integer number (167759228).

Almost surely, 2^2421820725 is an apocalyptic number.

2421820725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2421820725 is a deficient number, since it is larger than the sum of its proper divisors (1604400747).

2421820725 is a wasteful number, since it uses less digits than its factorization.

2421820725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178597 (or 178592 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 2421820725 is about 49211.9977749329. The cubic root of 2421820725 is about 1342.9113068945.

The spelling of 2421820725 in words is "two billion, four hundred twenty-one million, eight hundred twenty thousand, seven hundred twenty-five".