155284925 has 6 divisors (see below), whose sum is σ = 192553338. Its totient is φ = 124227920.

The previous prime is 155284907. The next prime is 155284933. The reversal of 155284925 is 529482551.

It can be written as a sum of positive squares in 3 ways, for example, as 4044121 + 151240804 = 2011^2 + 12298^2 .

It is not a de Polignac number, because 155284925 - 2⁶ = 155284861 is a prime.

It is a super-3 number, since 3×155284925³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3105674 + ... + 3105723.

It is an arithmetic number, because the mean of its divisors is an integer number (32092223).

Almost surely, 2^155284925 is an apocalyptic number.

It is an amenable number.

155284925 is a deficient number, since it is larger than the sum of its proper divisors (37268413).

155284925 is an equidigital number, since it uses as much as digits as its factorization.

155284925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211407 (or 6211402 counting only the distinct ones).

The product of its digits is 144000, while the sum is 41.

The square root of 155284925 is about 12461.3372075392. The cubic root of 155284925 is about 537.4974797069.

The spelling of 155284925 in words is "one hundred fifty-five million, two hundred eighty-four thousand, nine hundred twenty-five".