10251565 has 8 divisors (see below), whose sum is σ = 12334968. Its totient is φ = 8179200.

The previous prime is 10251557. The next prime is 10251569. The reversal of 10251565 is 56515201.

It can be written as a sum of positive squares in 4 ways, for example, as 1022121 + 9229444 = 1011^2 + 3038^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10251565 - 2³ = 10251557 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 (10251569) 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 7 ways as a sum of consecutive naturals, for example, 552 + ... + 4561.

It is an arithmetic number, because the mean of its divisors is an integer number (1541871).

Almost surely, 2^10251565 is an apocalyptic number.

It is an amenable number.

10251565 is a deficient number, since it is larger than the sum of its proper divisors (2083403).

10251565 is an equidigital number, since it uses as much as digits as its factorization.

10251565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 10251565 is about 3201.8065213251. The cubic root of 10251565 is about 217.2351291950.

Adding to 10251565 its reverse (56515201), we get a palindrome (66766766).

It can be divided in two parts, 10251 and 565, that added together give a square (10816 = 104²).

The spelling of 10251565 in words is "ten million, two hundred fifty-one thousand, five hundred sixty-five".