25401424 has 20 divisors (see below), whose sum is σ = 49595040. Its totient is φ = 12602720.

The previous prime is 25401391. The next prime is 25401443. The reversal of 25401424 is 42410452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25401395 and 25401404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3964 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (2479752).

Almost surely, 2^25401424 is an apocalyptic number.

It is an amenable number.

25401424 is a deficient number, since it is larger than the sum of its proper divisors (24193616).

25401424 is a wasteful number, since it uses less digits than its factorization.

25401424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12258 (or 12252 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 25401424 is about 5039.9825396523. The cubic root of 25401424 is about 293.9584990860.

Adding to 25401424 its reverse (42410452), we get a palindrome (67811876).

Subtracting 25401424 from its reverse (42410452), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 25401424 in words is "twenty-five million, four hundred one thousand, four hundred twenty-four".