1152551025 has 30 divisors (see below), whose sum is σ = 2134926662. Its totient is φ = 614692800.

The previous prime is 1152551021. The next prime is 1152551033. The reversal of 1152551025 is 5201552511.

It can be written as a sum of positive squares in 3 ways, for example, as 242985744 + 909565281 = 15588^2 + 30159^2 .

It is not a de Polignac number, because 1152551025 - 2² = 1152551021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1152551025.

It is not an unprimeable number, because it can be changed into a prime (1152551021) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 282556 + ... + 286605.

Almost surely, 2^1152551025 is an apocalyptic number.

1152551025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1152551025 is a deficient number, since it is larger than the sum of its proper divisors (982375637).

1152551025 is an equidigital number, since it uses as much as digits as its factorization.

1152551025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569183 (or 569169 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 1152551025 is about 33949.2418913884. The cubic root of 1152551025 is about 1048.4636715541.

The spelling of 1152551025 in words is "one billion, one hundred fifty-two million, five hundred fifty-one thousand, twenty-five".