11215625 has 24 divisors (see below), whose sum is σ = 14545944. Its totient is φ = 8640000.

The previous prime is 11215619. The next prime is 11215627. The reversal of 11215625 is 52651211.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 10582009 + 633616 = 3253^2 + 796^2 .

It is not a de Polignac number, because 11215625 - 2²² = 7021321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11215625.

It is not an unprimeable number, because it can be changed into a prime (11215627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115577 + ... + 115673.

It is an arithmetic number, because the mean of its divisors is an integer number (606081).

Almost surely, 2^11215625 is an apocalyptic number.

It is an amenable number.

11215625 is a deficient number, since it is larger than the sum of its proper divisors (3330319).

11215625 is an frugal number, since it uses more digits than its factorization.

11215625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 139 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 11215625 is about 3348.9737233965. The cubic root of 11215625 is about 223.8417848003.

Adding to 11215625 its reverse (52651211), we get a palindrome (63866836).

The spelling of 11215625 in words is "eleven million, two hundred fifteen thousand, six hundred twenty-five".