123983732225 has 6 divisors (see below), whose sum is σ = 153739827990. Its totient is φ = 99186985760.

The previous prime is 123983732221. The next prime is 123983732231. The reversal of 123983732225 is 522237389321.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 23504875969 + 100478856256 = 153313^2 + 316984^2 .

It is not a de Polignac number, because 123983732225 - 2² = 123983732221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123983732225.

It is not an unprimeable number, because it can be changed into a prime (123983732221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2479674620 + ... + 2479674669.

It is an arithmetic number, because the mean of its divisors is an integer number (25623304665).

Almost surely, 2^123983732225 is an apocalyptic number.

It is an amenable number.

123983732225 is a deficient number, since it is larger than the sum of its proper divisors (29756095765).

123983732225 is an equidigital number, since it uses as much as digits as its factorization.

123983732225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959349299 (or 4959349294 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The spelling of 123983732225 in words is "one hundred twenty-three billion, nine hundred eighty-three million, seven hundred thirty-two thousand, two hundred twenty-five".