1155220435025 has 6 divisors (see below), whose sum is σ = 1432473339462. Its totient is φ = 924176348000.

The previous prime is 1155220434967. The next prime is 1155220435067. The reversal of 1155220435025 is 5205340225511.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 96085120576 + 1059135314449 = 309976^2 + 1029143^2 .

It is not a de Polignac number, because 1155220435025 - 2⁸ = 1155220434769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23104408676 + ... + 23104408725.

It is an arithmetic number, because the mean of its divisors is an integer number (238745556577).

Almost surely, 2^{1155220435025} is an apocalyptic number.

It is an amenable number.

1155220435025 is a deficient number, since it is larger than the sum of its proper divisors (277252904437).

1155220435025 is an equidigital number, since it uses as much as digits as its factorization.

1155220435025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46208817411 (or 46208817406 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 1155220435025 in words is "one trillion, one hundred fifty-five billion, two hundred twenty million, four hundred thirty-five thousand, twenty-five".