1240225535 has 4 divisors (see below), whose sum is σ = 1488270648. Its totient is φ = 992180424.

The previous prime is 1240225507. The next prime is 1240225537. The reversal of 1240225535 is 5355220421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5355220421 = 67 ⋅79928663.

It is a cyclic number.

It is not a de Polignac number, because 1240225535 - 2⁸ = 1240225279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240225498 and 1240225507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240225537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124022549 + ... + 124022558.

It is an arithmetic number, because the mean of its divisors is an integer number (372067662).

Almost surely, 2^1240225535 is an apocalyptic number.

1240225535 is a deficient number, since it is larger than the sum of its proper divisors (248045113).

1240225535 is an equidigital number, since it uses as much as digits as its factorization.

1240225535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248045112.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1240225535 is about 35216.8359595237. The cubic root of 1240225535 is about 1074.4022016133.

Adding to 1240225535 its reverse (5355220421), we get a palindrome (6595445956).

The spelling of 1240225535 in words is "one billion, two hundred forty million, two hundred twenty-five thousand, five hundred thirty-five".