11425551 has 8 divisors (see below), whose sum is σ = 15278640. Its totient is φ = 7594752.

The previous prime is 11425537. The next prime is 11425597. The reversal of 11425551 is 15552411.

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

It is not a de Polignac number, because 11425551 - 2²² = 7231247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11425501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4336 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (1909830).

Almost surely, 2^11425551 is an apocalyptic number.

11425551 is a deficient number, since it is larger than the sum of its proper divisors (3853089).

11425551 is a wasteful number, since it uses less digits than its factorization.

11425551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145.

The product of its digits is 1000, while the sum is 24.

The square root of 11425551 is about 3380.1702619839. The cubic root of 11425551 is about 225.2297307912.

Adding to 11425551 its reverse (15552411), we get a palindrome (26977962).

The spelling of 11425551 in words is "eleven million, four hundred twenty-five thousand, five hundred fifty-one".