1155144025 has 12 divisors (see below), whose sum is σ = 1637004352. Its totient is φ = 792098640.

The previous prime is 1155143993. The next prime is 1155144031. The reversal of 1155144025 is 5204415511.

It is not a de Polignac number, because 1155144025 - 2⁵ = 1155143993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1155143984 and 1155144002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3300237 + ... + 3300586.

Almost surely, 2^1155144025 is an apocalyptic number.

It is an amenable number.

1155144025 is a deficient number, since it is larger than the sum of its proper divisors (481860327).

1155144025 is an equidigital number, since it uses as much as digits as its factorization.

1155144025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600840 (or 6600835 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1155144025 is about 33987.4098012779. The cubic root of 1155144025 is about 1049.2493576755.

Adding to 1155144025 its reverse (5204415511), we get a palindrome (6359559536).

The spelling of 1155144025 in words is "one billion, one hundred fifty-five million, one hundred forty-four thousand, twenty-five".