1252552340240 has 40 divisors (see below), whose sum is σ = 2914003467288. Its totient is φ = 500707942400.

The previous prime is 1252552340209. The next prime is 1252552340243. The reversal of 1252552340240 is 420432552521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 589037830144 + 663514510096 = 767488^2 + 814564^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1252552340240.

It is not an unprimeable number, because it can be changed into a prime (1252552340243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4761647 + ... + 5017806.

Almost surely, 2^{1252552340240} is an apocalyptic number.

1252552340240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252552340240 is an abundant number, since it is smaller than the sum of its proper divisors (1661451127048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252552340240 is a wasteful number, since it uses less digits than its factorization.

1252552340240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781067 (or 9781061 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 1252552340240 its reverse (420432552521), we get a palindrome (1672984892761).

The spelling of 1252552340240 in words is "one trillion, two hundred fifty-two billion, five hundred fifty-two million, three hundred forty thousand, two hundred forty".