25525642 has 8 divisors (see below), whose sum is σ = 38937600. Its totient is φ = 12546444.

The previous prime is 25525627. The next prime is 25525649. The reversal of 25525642 is 24652552.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (25525649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108042 + ... + 108277.

It is an arithmetic number, because the mean of its divisors is an integer number (4867200).

Almost surely, 2^25525642 is an apocalyptic number.

25525642 is a deficient number, since it is larger than the sum of its proper divisors (13411958).

25525642 is a wasteful number, since it uses less digits than its factorization.

25525642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216380.

The product of its digits is 24000, while the sum is 31.

The square root of 25525642 is about 5052.2907675628. The cubic root of 25525642 is about 294.4368919018.

The spelling of 25525642 in words is "twenty-five million, five hundred twenty-five thousand, six hundred forty-two".