1855456225 has 12 divisors (see below), whose sum is σ = 2629446784. Its totient is φ = 1272312720.

The previous prime is 1855456223. The next prime is 1855456231. The reversal of 1855456225 is 5226545581.

It is not a de Polignac number, because 1855456225 - 2¹ = 1855456223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1855456223) 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, 5301129 + ... + 5301478.

Almost surely, 2^1855456225 is an apocalyptic number.

It is an amenable number.

1855456225 is a deficient number, since it is larger than the sum of its proper divisors (773990559).

1855456225 is a wasteful number, since it uses less digits than its factorization.

1855456225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10602624 (or 10602619 counting only the distinct ones).

The product of its digits is 480000, while the sum is 43.

The square root of 1855456225 is about 43075.0069645961. The cubic root of 1855456225 is about 1228.8067006576.

The spelling of 1855456225 in words is "one billion, eight hundred fifty-five million, four hundred fifty-six thousand, two hundred twenty-five".