1223637025 has 24 divisors (see below), whose sum is σ = 1672045760. Its totient is φ = 882584640.

The previous prime is 1223637017. The next prime is 1223637029. The reversal of 1223637025 is 5207363221.

It is not a de Polignac number, because 1223637025 - 2³ = 1223637017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223637029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29805 + ... + 57754.

Almost surely, 2^1223637025 is an apocalyptic number.

It is an amenable number.

1223637025 is a deficient number, since it is larger than the sum of its proper divisors (448408735).

1223637025 is a wasteful number, since it uses less digits than its factorization.

1223637025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87625 (or 87620 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 1223637025 is about 34980.5235095188. The cubic root of 1223637025 is about 1069.5904989607.

The spelling of 1223637025 in words is "one billion, two hundred twenty-three million, six hundred thirty-seven thousand, twenty-five".