25421351 has 4 divisors (see below), whose sum is σ = 25445112. Its totient is φ = 25397592.

The previous prime is 25421321. The next prime is 25421359. The reversal of 25421351 is 15312452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25421351 - 2⁶ = 25421287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25421359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10196 + ... + 12441.

It is an arithmetic number, because the mean of its divisors is an integer number (6361278).

Almost surely, 2^25421351 is an apocalyptic number.

25421351 is a deficient number, since it is larger than the sum of its proper divisors (23761).

25421351 is a wasteful number, since it uses less digits than its factorization.

25421351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23760.

The product of its digits is 1200, while the sum is 23.

The square root of 25421351 is about 5041.9590438638. The cubic root of 25421351 is about 294.0353475324.

The spelling of 25421351 in words is "twenty-five million, four hundred twenty-one thousand, three hundred fifty-one".