551154021225 has 24 divisors (see below), whose sum is σ = 940636200192. Its totient is φ = 284466590400.

The previous prime is 551154021217. The next prime is 551154021247. The reversal of 551154021225 is 522120451155.

It is not a de Polignac number, because 551154021225 - 2³ = 551154021217 is a prime.

It is a super-2 number, since 2×551154021225² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 118525422 + ... + 118530071.

It is an arithmetic number, because the mean of its divisors is an integer number (39193175008).

Almost surely, 2^551154021225 is an apocalyptic number.

It is an amenable number.

551154021225 is a deficient number, since it is larger than the sum of its proper divisors (389482178967).

551154021225 is a wasteful number, since it uses less digits than its factorization.

551154021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237055537 (or 237055532 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 551154021225 in words is "five hundred fifty-one billion, one hundred fifty-four million, twenty-one thousand, two hundred twenty-five".