25383421 has 24 divisors (see below), whose sum is σ = 31256064. Its totient is φ = 20512800.

The previous prime is 25383403. The next prime is 25383433. The reversal of 25383421 is 12438352.

It is not a de Polignac number, because 25383421 - 2¹¹ = 25381373 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25383421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25383401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113716 + ... + 113938.

It is an arithmetic number, because the mean of its divisors is an integer number (1302336).

Almost surely, 2^25383421 is an apocalyptic number.

It is an amenable number.

25383421 is a deficient number, since it is larger than the sum of its proper divisors (5872643).

25383421 is a wasteful number, since it uses less digits than its factorization.

25383421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 354 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 25383421 is about 5038.1962049924. The cubic root of 25383421 is about 293.8890359776.

The spelling of 25383421 in words is "twenty-five million, three hundred eighty-three thousand, four hundred twenty-one".