11425561 has 8 divisors (see below), whose sum is σ = 13084160. Its totient is φ = 9773568.

The previous prime is 11425537. The next prime is 11425597. The reversal of 11425561 is 16552411.

It is a happy number.

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

It is not a de Polignac number, because 11425561 - 2⁷ = 11425433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11425501) 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, 2905 + ... + 5593.

It is an arithmetic number, because the mean of its divisors is an integer number (1635520).

Almost surely, 2^11425561 is an apocalyptic number.

It is an amenable number.

11425561 is a deficient number, since it is larger than the sum of its proper divisors (1658599).

11425561 is an equidigital number, since it uses as much as digits as its factorization.

11425561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303.

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

The square root of 11425561 is about 3380.1717411990. The cubic root of 11425561 is about 225.2297965006.

Adding to 11425561 its reverse (16552411), we get a palindrome (27977972).

The spelling of 11425561 in words is "eleven million, four hundred twenty-five thousand, five hundred sixty-one".