528687025 has 12 divisors (see below), whose sum is σ = 662065884. Its totient is φ = 418760000.

The previous prime is 528687013. The next prime is 528687037. The reversal of 528687025 is 520786825.

It is an interprime number because it is at equal distance from previous prime (528687013) and next prime (528687037).

It can be written as a sum of positive squares in 6 ways, for example, as 25492401 + 503194624 = 5049^2 + 22432^2 .

It is not a de Polignac number, because 528687025 - 2¹¹ = 528684977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 102166 + ... + 107215.

It is an arithmetic number, because the mean of its divisors is an integer number (55172157).

Almost surely, 2^528687025 is an apocalyptic number.

It is an amenable number.

528687025 is a deficient number, since it is larger than the sum of its proper divisors (133378859).

528687025 is a wasteful number, since it uses less digits than its factorization.

528687025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209492 (or 209487 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 528687025 is about 22993.1951890119. The cubic root of 528687025 is about 808.5984118995.

The spelling of 528687025 in words is "five hundred twenty-eight million, six hundred eighty-seven thousand, twenty-five".