1555425233 has 4 divisors (see below), whose sum is σ = 1575114240. Its totient is φ = 1535736228.

The previous prime is 1555425227. The next prime is 1555425257. The reversal of 1555425233 is 3325245551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3325245551 = 12781 ⋅260171.

It is a cyclic number.

It is not a de Polignac number, because 1555425233 - 2⁶ = 1555425169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1555425193 and 1555425202.

It is not an unprimeable number, because it can be changed into a prime (1555425133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9844385 + ... + 9844542.

It is an arithmetic number, because the mean of its divisors is an integer number (393778560).

Almost surely, 2^1555425233 is an apocalyptic number.

It is an amenable number.

1555425233 is a deficient number, since it is larger than the sum of its proper divisors (19689007).

1555425233 is an equidigital number, since it uses as much as digits as its factorization.

1555425233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19689006.

The product of its digits is 90000, while the sum is 35.

The square root of 1555425233 is about 39438.8797127910. The cubic root of 1555425233 is about 1158.6431899150.

The spelling of 1555425233 in words is "one billion, five hundred fifty-five million, four hundred twenty-five thousand, two hundred thirty-three".