25400120 has 16 divisors (see below), whose sum is σ = 57150360. Its totient is φ = 10160032.

The previous prime is 25400083. The next prime is 25400147. The reversal of 25400120 is 2100452.

It is a junction number, because it is equal to n+sod(n) for n = 25400095 and 25400104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317462 + ... + 317541.

Almost surely, 2^25400120 is an apocalyptic number.

25400120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25400120 is an abundant number, since it is smaller than the sum of its proper divisors (31750240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25400120 is a wasteful number, since it uses less digits than its factorization.

25400120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635014 (or 635010 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 25400120 is about 5039.8531724645. The cubic root of 25400120 is about 293.9534688110.

Adding to 25400120 its reverse (2100452), we get a palindrome (27500572).

The spelling of 25400120 in words is "twenty-five million, four hundred thousand, one hundred twenty".