25434321 has 12 divisors (see below), whose sum is σ = 37276176. Its totient is φ = 15414520.

The previous prime is 25434319. The next prime is 25434323. The reversal of 25434321 is 12343452.

It is an interprime number because it is at equal distance from previous prime (25434319) and next prime (25434323).

It is not a de Polignac number, because 25434321 - 2¹ = 25434319 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 25434291 and 25434300.

It is not an unprimeable number, because it can be changed into a prime (25434323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34671 + ... + 35396.

It is an arithmetic number, because the mean of its divisors is an integer number (3106348).

Almost surely, 2^25434321 is an apocalyptic number.

It is an amenable number.

25434321 is a deficient number, since it is larger than the sum of its proper divisors (11841855).

25434321 is a wasteful number, since it uses less digits than its factorization.

25434321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70092 (or 70081 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 25434321 is about 5043.2450862515. The cubic root of 25434321 is about 294.0853447450.

Adding to 25434321 its reverse (12343452), we get a palindrome (37777773).

The spelling of 25434321 in words is "twenty-five million, four hundred thirty-four thousand, three hundred twenty-one".