1240203225 has 24 divisors (see below), whose sum is σ = 2076434560. Its totient is φ = 653065920.

The previous prime is 1240203203. The next prime is 1240203229. The reversal of 1240203225 is 5223020421.

It is not a de Polignac number, because 1240203225 - 2⁶ = 1240203161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1240203229) 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, 98734 + ... + 110583.

Almost surely, 2^1240203225 is an apocalyptic number.

1240203225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240203225 is a deficient number, since it is larger than the sum of its proper divisors (836231335).

1240203225 is a wasteful number, since it uses less digits than its factorization.

1240203225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209409 (or 209404 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1240203225 is about 35216.5192061907. The cubic root of 1240203225 is about 1074.3957592214.

Adding to 1240203225 its reverse (5223020421), we get a palindrome (6463223646).

The spelling of 1240203225 in words is "one billion, two hundred forty million, two hundred three thousand, two hundred twenty-five".