425821481 has 4 divisors (see below), whose sum is σ = 425891712. Its totient is φ = 425751252.

The previous prime is 425821477. The next prime is 425821519. The reversal of 425821481 is 184128524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425821481 - 2² = 425821477 is a prime.

It is a super-2 number, since 2×425821481² = 362647867362066722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425821411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25061 + ... + 38466.

It is an arithmetic number, because the mean of its divisors is an integer number (106472928).

Almost surely, 2^425821481 is an apocalyptic number.

It is an amenable number.

425821481 is a deficient number, since it is larger than the sum of its proper divisors (70231).

425821481 is an equidigital number, since it uses as much as digits as its factorization.

425821481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70230.

The product of its digits is 20480, while the sum is 35.

The square root of 425821481 is about 20635.4423504804. The cubic root of 425821481 is about 752.3314006593.

The spelling of 425821481 in words is "four hundred twenty-five million, eight hundred twenty-one thousand, four hundred eighty-one".