25505672 has 16 divisors (see below), whose sum is σ = 47932560. Its totient is φ = 12723664.

The previous prime is 25505647. The next prime is 25505677. The reversal of 25505672 is 27650552.

It is not an unprimeable number, because it can be changed into a prime (25505677) 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 3 ways as a sum of consecutive naturals, for example, 323 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (2995785).

Almost surely, 2^25505672 is an apocalyptic number.

It is an amenable number.

25505672 is a deficient number, since it is larger than the sum of its proper divisors (22426888).

25505672 is a wasteful number, since it uses less digits than its factorization.

25505672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7300 (or 7296 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 25505672 is about 5050.3140496409. The cubic root of 25505672 is about 294.3600875811.

The spelling of 25505672 in words is "twenty-five million, five hundred five thousand, six hundred seventy-two".