25579089 has 12 divisors (see below), whose sum is σ = 37050000. Its totient is φ = 17005464.

The previous prime is 25579063. The next prime is 25579093. The reversal of 25579089 is 98097552.

Added to its reverse (98097552) it gives a square (123676641 = 11121²).

It is a happy number.

25579089 is a `hidden beast` number, since 2 + 557 + 90 + 8 + 9 = 666.

It is not a de Polignac number, because 25579089 - 2⁹ = 25578577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25579009) 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, 339 + ... + 7160.

It is an arithmetic number, because the mean of its divisors is an integer number (3087500).

Almost surely, 2^25579089 is an apocalyptic number.

It is an amenable number.

25579089 is a deficient number, since it is larger than the sum of its proper divisors (11470911).

25579089 is a wasteful number, since it uses less digits than its factorization.

25579089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7884 (or 7881 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 25579089 is about 5057.5773844796. The cubic root of 25579089 is about 294.6422513832.

Adding to 25579089 its reverse (98097552), we get a square (123676641 = 11121²).

The spelling of 25579089 in words is "twenty-five million, five hundred seventy-nine thousand, eighty-nine".