25294321 has 16 divisors (see below), whose sum is σ = 27998208. Its totient is φ = 22708800.

The previous prime is 25294307. The next prime is 25294331. The reversal of 25294321 is 12349252.

It is a cyclic number.

It is not a de Polignac number, because 25294321 - 2⁵ = 25294289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

25294321 is a Rhonda number in base 10.

Its product of digits (4320) is a multiple of the sum of its prime divisors (432).

It is a self number, because there is not a number n which added to its sum of digits gives 25294321.

It is not an unprimeable number, because it can be changed into a prime (25294331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132336 + ... + 132526.

It is an arithmetic number, because the mean of its divisors is an integer number (1749888).

Almost surely, 2^25294321 is an apocalyptic number.

It is an amenable number.

25294321 is a deficient number, since it is larger than the sum of its proper divisors (2703887).

25294321 is a wasteful number, since it uses less digits than its factorization.

25294321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its digits is 4320, while the sum is 28.

The square root of 25294321 is about 5029.3459813379. The cubic root of 25294321 is about 293.5447664971.

The spelling of 25294321 in words is "twenty-five million, two hundred ninety-four thousand, three hundred twenty-one".