25641270 has 48 divisors (see below), whose sum is σ = 70593120. Its totient is φ = 6435072.

The previous prime is 25641233. The next prime is 25641293. The reversal of 25641270 is 7214652.

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 23 ways as a sum of consecutive naturals, for example, 6850 + ... + 9909.

It is an arithmetic number, because the mean of its divisors is an integer number (1470690).

Almost surely, 2^25641270 is an apocalyptic number.

25641270 is an abundant number, since it is smaller than the sum of its proper divisors (44951850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25641270 is a wasteful number, since it uses less digits than its factorization.

25641270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16789 (or 16786 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 25641270 is about 5063.7209638763. The cubic root of 25641270 is about 294.8808098406.

The spelling of 25641270 in words is "twenty-five million, six hundred forty-one thousand, two hundred seventy".