155025133 has 2 divisors, whose sum is σ = 155025134. Its totient is φ = 155025132.

The previous prime is 155025121. The next prime is 155025139. The reversal of 155025133 is 331520551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149279524 + 5745609 = 12218^2 + 2397^2 .

It is a cyclic number.

It is not a de Polignac number, because 155025133 - 2⁹ = 155024621 is a prime.

It is equal to p_8710900 and since 155025133 and 8710900 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 155025098 and 155025107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155025139) 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 as a sum of consecutive naturals, namely, 77512566 + 77512567.

It is an arithmetic number, because the mean of its divisors is an integer number (77512567).

Almost surely, 2^155025133 is an apocalyptic number.

It is an amenable number.

155025133 is a deficient number, since it is larger than the sum of its proper divisors (1).

155025133 is an equidigital number, since it uses as much as digits as its factorization.

155025133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 155025133 is about 12450.9089226450. The cubic root of 155025133 is about 537.1975675959.

Adding to 155025133 its reverse (331520551), we get a palindrome (486545684).

The spelling of 155025133 in words is "one hundred fifty-five million, twenty-five thousand, one hundred thirty-three".