1231241225 has 12 divisors (see below), whose sum is σ = 1531657920. Its totient is φ = 981819600.

The previous prime is 1231241191. The next prime is 1231241233. The reversal of 1231241225 is 5221421321.

1231241225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1231241225 - 2⁶ = 1231241161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231241225.

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, 71405 + ... + 86954.

It is an arithmetic number, because the mean of its divisors is an integer number (127638160).

Almost surely, 2^1231241225 is an apocalyptic number.

It is an amenable number.

1231241225 is a deficient number, since it is larger than the sum of its proper divisors (300416695).

1231241225 is a wasteful number, since it uses less digits than its factorization.

1231241225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158680 (or 158675 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 1231241225 is about 35089.0470802500. The cubic root of 1231241225 is about 1071.8015549469.

Adding to 1231241225 its reverse (5221421321), we get a palindrome (6452662546).

The spelling of 1231241225 in words is "one billion, two hundred thirty-one million, two hundred forty-one thousand, two hundred twenty-five".