210525136 has 10 divisors (see below), whose sum is σ = 407892482. Its totient is φ = 105262560.

The previous prime is 210525121. The next prime is 210525137. The reversal of 210525136 is 631525012.

It can be written as a sum of positive squares in only one way, i.e., 169000000 + 41525136 = 13000^2 + 6444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210525136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210525137) 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 as a sum of consecutive naturals, namely, 6578895 + ... + 6578926.

Almost surely, 2^210525136 is an apocalyptic number.

It is an amenable number.

210525136 is a deficient number, since it is larger than the sum of its proper divisors (197367346).

210525136 is a wasteful number, since it uses less digits than its factorization.

210525136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13157829 (or 13157823 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 210525136 is about 14509.4843464542. The cubic root of 210525136 is about 594.8872380055.

The spelling of 210525136 in words is "two hundred ten million, five hundred twenty-five thousand, one hundred thirty-six".