10509525 has 36 divisors (see below), whose sum is σ = 20277348. Its totient is φ = 5172480.

The previous prime is 10509523. The next prime is 10509533. The reversal of 10509525 is 52590501.

It can be written as a sum of positive squares in 6 ways, for example, as 1830609 + 8678916 = 1353^2 + 2946^2 .

It is not a de Polignac number, because 10509525 - 2¹ = 10509523 is a prime.

It is a super-2 number, since 2×10509525² = 220900231451250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10509523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1129 + ... + 4721.

Almost surely, 2^10509525 is an apocalyptic number.

10509525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10509525 is a deficient number, since it is larger than the sum of its proper divisors (9767823).

10509525 is a wasteful number, since it uses less digits than its factorization.

10509525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3614 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 10509525 is about 3241.8397554475. The cubic root of 10509525 is about 219.0421511410.

The spelling of 10509525 in words is "ten million, five hundred nine thousand, five hundred twenty-five".