23225205420 has 108 divisors (see below), whose sum is σ = 73646301456. Its totient is φ = 5924086080.

The previous prime is 23225205413. The next prime is 23225205433. The reversal of 23225205420 is 2450252232.

23225205420 is a `hidden beast` number, since 2 + 32 + 2 + 5 + 205 + 420 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26736 + ... + 217175.

Almost surely, 2^23225205420 is an apocalyptic number.

23225205420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23225205420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36823150728).

23225205420 is an abundant number, since it is smaller than the sum of its proper divisors (50421096036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23225205420 is a wasteful number, since it uses less digits than its factorization.

23225205420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243972 (or 243944 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 23225205420 its reverse (2450252232), we get a palindrome (25675457652).

The spelling of 23225205420 in words is "twenty-three billion, two hundred twenty-five million, two hundred five thousand, four hundred twenty".