1155571556025 has 48 divisors (see below), whose sum is σ = 1932747796224. Its totient is φ = 609159137280.

The previous prime is 1155571555951. The next prime is 1155571556057. The reversal of 1155571556025 is 5206551755511.

It is not a de Polignac number, because 1155571556025 - 2¹² = 1155571551929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5520832 + ... + 5726318.

It is an arithmetic number, because the mean of its divisors is an integer number (40265579088).

Almost surely, 2^{1155571556025} is an apocalyptic number.

1155571556025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155571556025 is a deficient number, since it is larger than the sum of its proper divisors (777176240199).

1155571556025 is a wasteful number, since it uses less digits than its factorization.

1155571556025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206370 (or 206365 counting only the distinct ones).

The product of its (nonzero) digits is 1312500, while the sum is 48.

The spelling of 1155571556025 in words is "one trillion, one hundred fifty-five billion, five hundred seventy-one million, five hundred fifty-six thousand, twenty-five".