23243220225 has 36 divisors (see below), whose sum is σ = 42416705916. Its totient is φ = 12162483840.

The previous prime is 23243220223. The next prime is 23243220227. The reversal of 23243220225 is 52202234232.

23243220225 is a `hidden beast` number, since 2 + 3 + 2 + 432 + 2 + 0 + 225 = 666.

It is an interprime number because it is at equal distance from previous prime (23243220223) and next prime (23243220227).

It can be written as a sum of positive squares in 6 ways, for example, as 73205136 + 23170015089 = 8556^2 + 152217^2 .

It is not a de Polignac number, because 23243220225 - 2¹ = 23243220223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23243220223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 962634 + ... + 986483.

It is an arithmetic number, because the mean of its divisors is an integer number (1178241831).

Almost surely, 2^23243220225 is an apocalyptic number.

23243220225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23243220225 is a deficient number, since it is larger than the sum of its proper divisors (19173485691).

23243220225 is a wasteful number, since it uses less digits than its factorization.

23243220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949186 (or 1949178 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 23243220225 its reverse (52202234232), we get a palindrome (75445454457).

The spelling of 23243220225 in words is "twenty-three billion, two hundred forty-three million, two hundred twenty thousand, two hundred twenty-five".