123001153225 has 12 divisors (see below), whose sum is σ = 153403062156. Its totient is φ = 97832127680.

The previous prime is 123001153193. The next prime is 123001153273. The reversal of 123001153225 is 522351100321.

It can be written as a sum of positive squares in 6 ways, for example, as 15230768569 + 107770384656 = 123413^2 + 328284^2 .

It is not a de Polignac number, because 123001153225 - 2⁵ = 123001153193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123001153225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14215462 + ... + 14224111.

It is an arithmetic number, because the mean of its divisors is an integer number (12783588513).

Almost surely, 2^123001153225 is an apocalyptic number.

It is an amenable number.

123001153225 is a deficient number, since it is larger than the sum of its proper divisors (30401908931).

123001153225 is a wasteful number, since it uses less digits than its factorization.

123001153225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28439756 (or 28439751 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 123001153225 its reverse (522351100321), we get a palindrome (645352253546).

The spelling of 123001153225 in words is "one hundred twenty-three billion, one million, one hundred fifty-three thousand, two hundred twenty-five".