1155225625 has 40 divisors (see below), whose sum is σ = 1484231144. Its totient is φ = 898560000.

The previous prime is 1155225613. The next prime is 1155225629. The reversal of 1155225625 is 5265225511.

It can be written as a sum of positive squares in 20 ways, for example, as 949934041 + 205291584 = 30821^2 + 14328^2 .

It is not a de Polignac number, because 1155225625 - 2¹⁷ = 1155094553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155225629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5985529 + ... + 5985721.

Almost surely, 2^1155225625 is an apocalyptic number.

It is an amenable number.

1155225625 is a deficient number, since it is larger than the sum of its proper divisors (329005519).

1155225625 is an equidigital number, since it uses as much as digits as its factorization.

1155225625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 416 counting only the distinct ones).

The product of its digits is 30000, while the sum is 34.

The square root of 1155225625 is about 33988.6102246032. The cubic root of 1155225625 is about 1049.2740636082.

The spelling of 1155225625 in words is "one billion, one hundred fifty-five million, two hundred twenty-five thousand, six hundred twenty-five".