10525813 has 4 divisors (see below), whose sum is σ = 10539340. Its totient is φ = 10512288.

The previous prime is 10525793. The next prime is 10525817. The reversal of 10525813 is 31852501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31852501 = 397 ⋅80233.

It can be written as a sum of positive squares in 2 ways, for example, as 4008004 + 6517809 = 2002^2 + 2553^2 .

It is a 3-Lehmer number, since φ(10525813) divides (10525813-1)³.

It is a cyclic number.

It is not a de Polignac number, because 10525813 - 2⁹ = 10525301 is a prime.

It is a super-2 number, since 2×10525813² = 221585478621938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10525817) 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 3 ways as a sum of consecutive naturals, for example, 5520 + ... + 7177.

It is an arithmetic number, because the mean of its divisors is an integer number (2634835).

Almost surely, 2^10525813 is an apocalyptic number.

It is an amenable number.

10525813 is a deficient number, since it is larger than the sum of its proper divisors (13527).

10525813 is an equidigital number, since it uses as much as digits as its factorization.

10525813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13526.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 10525813 is about 3244.3509366282. The cubic root of 10525813 is about 219.1552522564.

The spelling of 10525813 in words is "ten million, five hundred twenty-five thousand, eight hundred thirteen".