1125435478720 has 56 divisors (see below), whose sum is σ = 3062792273184. Its totient is φ = 385863591936.

The previous prime is 1125435478709. The next prime is 1125435478729. The reversal of 1125435478720 is 278745345211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (1125435478729) 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, 251211037 + ... + 251215516.

It is an arithmetic number, because the mean of its divisors is an integer number (54692719164).

Almost surely, 2^{1125435478720} is an apocalyptic number.

1125435478720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125435478720 is an abundant number, since it is smaller than the sum of its proper divisors (1937356794464).

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

1125435478720 is an equidigital number, since it uses as much as digits as its factorization.

1125435478720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502426577 (or 502426567 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 1125435478720 in words is "one trillion, one hundred twenty-five billion, four hundred thirty-five million, four hundred seventy-eight thousand, seven hundred twenty".