25242638 has 8 divisors (see below), whose sum is σ = 39510288. Its totient is φ = 12072544.

The previous prime is 25242631. The next prime is 25242643. The reversal of 25242638 is 83624252.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25242631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274331 + ... + 274422.

It is an arithmetic number, because the mean of its divisors is an integer number (4938786).

Almost surely, 2^25242638 is an apocalyptic number.

25242638 is a deficient number, since it is larger than the sum of its proper divisors (14267650).

25242638 is a wasteful number, since it uses less digits than its factorization.

25242638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548778.

The product of its digits is 23040, while the sum is 32.

The square root of 25242638 is about 5024.2052107771. The cubic root of 25242638 is about 293.3447002597.

The spelling of 25242638 in words is "twenty-five million, two hundred forty-two thousand, six hundred thirty-eight".