10642505 has 4 divisors (see below), whose sum is σ = 12771012. Its totient is φ = 8514000.

The previous prime is 10642501. The next prime is 10642519. The reversal of 10642505 is 50524601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7441984 + 3200521 = 2728^2 + 1789^2 .

It is not a de Polignac number, because 10642505 - 2² = 10642501 is a prime.

It is a super-2 number, since 2×10642505² = 226525825350050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10642501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064246 + ... + 1064255.

It is an arithmetic number, because the mean of its divisors is an integer number (3192753).

Almost surely, 2^10642505 is an apocalyptic number.

It is an amenable number.

10642505 is a deficient number, since it is larger than the sum of its proper divisors (2128507).

10642505 is an equidigital number, since it uses as much as digits as its factorization.

10642505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128506.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 10642505 is about 3262.2852419738. The cubic root of 10642505 is about 219.9621491355.

The spelling of 10642505 in words is "ten million, six hundred forty-two thousand, five hundred five".