25509064 has 32 divisors (see below), whose sum is σ = 54849600. Its totient is φ = 10895040.

The previous prime is 25509053. The next prime is 25509089. The reversal of 25509064 is 46090552.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21199 + ... + 22369.

It is an arithmetic number, because the mean of its divisors is an integer number (1714050).

Almost surely, 2^25509064 is an apocalyptic number.

It is an amenable number.

25509064 is an abundant number, since it is smaller than the sum of its proper divisors (29340536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25509064 is a wasteful number, since it uses less digits than its factorization.

25509064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 25509064 is about 5050.6498591765. The cubic root of 25509064 is about 294.3731359880.

The spelling of 25509064 in words is "twenty-five million, five hundred nine thousand, sixty-four".