25420120 has 32 divisors (see below), whose sum is σ = 62395920. Its totient is φ = 9243520.

The previous prime is 25420099. The next prime is 25420139. The reversal of 25420120 is 2102452.

It is a junction number, because it is equal to n+sod(n) for n = 25420094 and 25420103.

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 7 ways as a sum of consecutive naturals, for example, 28447 + ... + 29326.

Almost surely, 2^25420120 is an apocalyptic number.

25420120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25420120 is an abundant number, since it is smaller than the sum of its proper divisors (36975800).

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

25420120 is a wasteful number, since it uses less digits than its factorization.

25420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57795 (or 57791 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 25420120 is about 5041.8369668207. The cubic root of 25420120 is about 294.0306013468.

Adding to 25420120 its reverse (2102452), we get a palindrome (27522572).

The spelling of 25420120 in words is "twenty-five million, four hundred twenty thousand, one hundred twenty".