30155617225 has 12 divisors (see below), whose sum is σ = 37512441436. Its totient is φ = 24047412480.

The previous prime is 30155617223. The next prime is 30155617243. The reversal of 30155617225 is 52271655103.

It can be written as a sum of positive squares in 6 ways, for example, as 1514455056 + 28641162169 = 38916^2 + 169237^2 .

It is not a de Polignac number, because 30155617225 - 2¹ = 30155617223 is a prime.

It is a super-2 number, since 2×30155617225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30155617223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1919052 + ... + 1934701.

Almost surely, 2^30155617225 is an apocalyptic number.

It is an amenable number.

30155617225 is a deficient number, since it is larger than the sum of its proper divisors (7356824211).

30155617225 is a wasteful number, since it uses less digits than its factorization.

30155617225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854076 (or 3854071 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 30155617225 in words is "thirty billion, one hundred fifty-five million, six hundred seventeen thousand, two hundred twenty-five".