1240405325 has 24 divisors (see below), whose sum is σ = 1590255360. Its totient is φ = 958780800.

The previous prime is 1240405303. The next prime is 1240405337. The reversal of 1240405325 is 5235040421.

It is a happy number.

It is not a de Polignac number, because 1240405325 - 2¹² = 1240401229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240405294 and 1240405303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 849446 + ... + 850904.

It is an arithmetic number, because the mean of its divisors is an integer number (66260640).

Almost surely, 2^1240405325 is an apocalyptic number.

It is an amenable number.

1240405325 is a deficient number, since it is larger than the sum of its proper divisors (349850035).

1240405325 is a wasteful number, since it uses less digits than its factorization.

1240405325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2592 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1240405325 is about 35219.3884813465. The cubic root of 1240405325 is about 1074.4541162135.

Adding to 1240405325 its reverse (5235040421), we get a palindrome (6475445746).

The spelling of 1240405325 in words is "one billion, two hundred forty million, four hundred five thousand, three hundred twenty-five".