123211425 has 24 divisors (see below), whose sum is σ = 206174304. Its totient is φ = 64917760.

The previous prime is 123211423. The next prime is 123211433. The reversal of 123211425 is 524112321.

It is not a de Polignac number, because 123211425 - 2¹ = 123211423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123211421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3672 + ... + 16121.

It is an arithmetic number, because the mean of its divisors is an integer number (8590596).

Almost surely, 2^123211425 is an apocalyptic number.

123211425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123211425 is a deficient number, since it is larger than the sum of its proper divisors (82962879).

123211425 is a wasteful number, since it uses less digits than its factorization.

123211425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19889 (or 19884 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 123211425 is about 11100.0641890036. The cubic root of 123211425 is about 497.6037678214.

Adding to 123211425 its reverse (524112321), we get a palindrome (647323746).

The spelling of 123211425 in words is "one hundred twenty-three million, two hundred eleven thousand, four hundred twenty-five".