55235725 has 12 divisors (see below), whose sum is σ = 68766804. Its totient is φ = 44011520.

The previous prime is 55235723. The next prime is 55235731. The reversal of 55235725 is 52753255.

55235725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4726276 + 50509449 = 2174^2 + 7107^2 .

It is not a de Polignac number, because 55235725 - 2¹ = 55235723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55235723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2127 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (5730567).

Almost surely, 2^55235725 is an apocalyptic number.

It is an amenable number.

55235725 is a deficient number, since it is larger than the sum of its proper divisors (13531079).

55235725 is a wasteful number, since it uses less digits than its factorization.

55235725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864 (or 8859 counting only the distinct ones).

The product of its digits is 52500, while the sum is 34.

The square root of 55235725 is about 7432.0740712132. The cubic root of 55235725 is about 380.8377753532.

The spelling of 55235725 in words is "fifty-five million, two hundred thirty-five thousand, seven hundred twenty-five".