25438670 has 16 divisors (see below), whose sum is σ = 46342800. Its totient is φ = 10052544.

The previous prime is 25438643. The next prime is 25438691. The reversal of 25438670 is 7683452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25438670.

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, 14495 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (2896425).

Almost surely, 2^25438670 is an apocalyptic number.

25438670 is a deficient number, since it is larger than the sum of its proper divisors (20904130).

25438670 is a wasteful number, since it uses less digits than its factorization.

25438670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30739.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 25438670 is about 5043.6762386180. The cubic root of 25438670 is about 294.1021056180.

The spelling of 25438670 in words is "twenty-five million, four hundred thirty-eight thousand, six hundred seventy".