11561425 has 12 divisors (see below), whose sum is σ = 14391936. Its totient is φ = 9213200.

The previous prime is 11561423. The next prime is 11561447. The reversal of 11561425 is 52416511.

It is a happy number.

It is not a de Polignac number, because 11561425 - 2¹ = 11561423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 11561425.

It is not an unprimeable number, because it can be changed into a prime (11561423) 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 11 ways as a sum of consecutive naturals, for example, 7032 + ... + 8518.

It is an arithmetic number, because the mean of its divisors is an integer number (1199328).

Almost surely, 2^11561425 is an apocalyptic number.

It is an amenable number.

11561425 is a deficient number, since it is larger than the sum of its proper divisors (2830511).

11561425 is a wasteful number, since it uses less digits than its factorization.

11561425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808 (or 1803 counting only the distinct ones).

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

The square root of 11561425 is about 3400.2095523659. The cubic root of 11561425 is about 226.1190343254.

Adding to 11561425 its reverse (52416511), we get a palindrome (63977936).

The spelling of 11561425 in words is "eleven million, five hundred sixty-one thousand, four hundred twenty-five".