1155015025 has 12 divisors (see below), whose sum is σ = 1432644912. Its totient is φ = 923737040.

The previous prime is 1155015023. The next prime is 1155015041. The reversal of 1155015025 is 5205105511.

It is not a de Polignac number, because 1155015025 - 2¹ = 1155015023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155015023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142122 + ... + 150028.

It is an arithmetic number, because the mean of its divisors is an integer number (119387076).

Almost surely, 2^1155015025 is an apocalyptic number.

It is an amenable number.

1155015025 is a deficient number, since it is larger than the sum of its proper divisors (277629887).

1155015025 is an equidigital number, since it uses as much as digits as its factorization.

1155015025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13760 (or 13755 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 1155015025 is about 33985.5119867275. The cubic root of 1155015025 is about 1049.2102981288.

The spelling of 1155015025 in words is "one billion, one hundred fifty-five million, fifteen thousand, twenty-five".