1201243425 has 24 divisors (see below), whose sum is σ = 2072409024. Its totient is φ = 612807360.

The previous prime is 1201243411. The next prime is 1201243429. The reversal of 1201243425 is 5243421021.

It is not a de Polignac number, because 1201243425 - 2⁶ = 1201243361 is a prime.

It is a super-2 number, since 2×1201243425² = 2885971532211461250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201243395 and 1201243404.

It is not an unprimeable number, because it can be changed into a prime (1201243429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346462 + ... + 349911.

It is an arithmetic number, because the mean of its divisors is an integer number (86350376).

Almost surely, 2^1201243425 is an apocalyptic number.

1201243425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1201243425 is a deficient number, since it is larger than the sum of its proper divisors (871165599).

1201243425 is a wasteful number, since it uses less digits than its factorization.

1201243425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696409 (or 696404 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1201243425 is about 34658.9587985560. The cubic root of 1201243425 is about 1063.0254803242.

Adding to 1201243425 its reverse (5243421021), we get a palindrome (6444664446).

The spelling of 1201243425 in words is "one billion, two hundred one million, two hundred forty-three thousand, four hundred twenty-five".