155025433 has 2 divisors, whose sum is σ = 155025434. Its totient is φ = 155025432.

The previous prime is 155025379. The next prime is 155025439. The reversal of 155025433 is 334520551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119836809 + 35188624 = 10947^2 + 5932^2 .

It is an emirp because it is prime and its reverse (334520551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155025433 - 2¹³ = 155017241 is a prime.

It is not a weakly prime, because it can be changed into another prime (155025439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77512716 + 77512717.

It is an arithmetic number, because the mean of its divisors is an integer number (77512717).

Almost surely, 2^155025433 is an apocalyptic number.

It is an amenable number.

155025433 is a deficient number, since it is larger than the sum of its proper divisors (1).

155025433 is an equidigital number, since it uses as much as digits as its factorization.

155025433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 155025433 is about 12450.9209699524. The cubic root of 155025433 is about 537.1979141186.

Adding to 155025433 its reverse (334520551), we get a palindrome (489545984).

The spelling of 155025433 in words is "one hundred fifty-five million, twenty-five thousand, four hundred thirty-three".