1252213545040 has 40 divisors (see below), whose sum is σ = 2911516874208. Its totient is φ = 500864707200.

The previous prime is 1252213545029. The next prime is 1252213545073. The reversal of 1252213545040 is 405453122521.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1252213544987 and 1252213545005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702015 + ... + 2324065.

Almost surely, 2^{1252213545040} is an apocalyptic number.

1252213545040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252213545040 is an abundant number, since it is smaller than the sum of its proper divisors (1659303329168).

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

1252213545040 is a wasteful number, since it uses less digits than its factorization.

1252213545040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647227 (or 647221 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 1252213545040 its reverse (405453122521), we get a palindrome (1657666667561).

The spelling of 1252213545040 in words is "one trillion, two hundred fifty-two billion, two hundred thirteen million, five hundred forty-five thousand, forty".