551407725 has 36 divisors (see below), whose sum is σ = 1077422112. Its totient is φ = 267348000.

The previous prime is 551407709. The next prime is 551407817. The reversal of 551407725 is 527704155.

551407725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551407725 - 2⁴ = 551407709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551407725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 108921 + ... + 113870.

It is an arithmetic number, because the mean of its divisors is an integer number (29928392).

Almost surely, 2^551407725 is an apocalyptic number.

551407725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551407725 is a deficient number, since it is larger than the sum of its proper divisors (526014387).

551407725 is a wasteful number, since it uses less digits than its factorization.

551407725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222818 (or 222810 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 551407725 is about 23482.0724170589. The cubic root of 551407725 is about 820.0196926661.

The spelling of 551407725 in words is "five hundred fifty-one million, four hundred seven thousand, seven hundred twenty-five".