2421181825 has 24 divisors (see below), whose sum is σ = 3137745600. Its totient is φ = 1849805760.

The previous prime is 2421181817. The next prime is 2421181853. The reversal of 2421181825 is 5281811242.

It is not a de Polignac number, because 2421181825 - 2³ = 2421181817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 404706 + ... + 410644.

It is an arithmetic number, because the mean of its divisors is an integer number (130739400).

Almost surely, 2^2421181825 is an apocalyptic number.

2421181825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2421181825 is a deficient number, since it is larger than the sum of its proper divisors (716563775).

2421181825 is a wasteful number, since it uses less digits than its factorization.

2421181825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6676 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 2421181825 is about 49205.5060435313. The cubic root of 2421181825 is about 1342.7932054616.

The spelling of 2421181825 in words is "two billion, four hundred twenty-one million, one hundred eighty-one thousand, eight hundred twenty-five".