1252312555452 has 48 divisors (see below), whose sum is σ = 3373928006400. Its totient is φ = 354114888192.

The previous prime is 1252312555433. The next prime is 1252312555547. The reversal of 1252312555452 is 2545552132521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76839702 + ... + 76855997.

It is an arithmetic number, because the mean of its divisors is an integer number (70290166800).

Almost surely, 2^{1252312555452} is an apocalyptic number.

1252312555452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1252312555452 is an abundant number, since it is smaller than the sum of its proper divisors (2121615450948).

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

1252312555452 is a wasteful number, since it uses less digits than its factorization.

1252312555452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153695810 (or 153695808 counting only the distinct ones).

The product of its digits is 600000, while the sum is 42.

Adding to 1252312555452 its reverse (2545552132521), we get a palindrome (3797864687973).

The spelling of 1252312555452 in words is "one trillion, two hundred fifty-two billion, three hundred twelve million, five hundred fifty-five thousand, four hundred fifty-two".