25572518 has 12 divisors (see below), whose sum is σ = 40485060. Its totient is φ = 12112956.

The previous prime is 25572517. The next prime is 25572541. The reversal of 25572518 is 81527552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25572511) 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 5 ways as a sum of consecutive naturals, for example, 16988 + ... + 18431.

It is an arithmetic number, because the mean of its divisors is an integer number (3373755).

Almost surely, 2^25572518 is an apocalyptic number.

25572518 is a deficient number, since it is larger than the sum of its proper divisors (14912542).

25572518 is a wasteful number, since it uses less digits than its factorization.

25572518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35459 (or 35440 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 25572518 is about 5056.9277234305. The cubic root of 25572518 is about 294.6170190532.

The spelling of 25572518 in words is "twenty-five million, five hundred seventy-two thousand, five hundred eighteen".