25220120 has 32 divisors (see below), whose sum is σ = 57190320. Its totient is φ = 10008960.

The previous prime is 25220119. The next prime is 25220147. The reversal of 25220120 is 2102252.

It is a junction number, because it is equal to n+sod(n) for n = 25220095 and 25220104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834 + ... + 7646.

Almost surely, 2^25220120 is an apocalyptic number.

25220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25220120 is an abundant number, since it is smaller than the sum of its proper divisors (31970200).

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

25220120 is a wasteful number, since it uses less digits than its factorization.

25220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955 (or 4951 counting only the distinct ones).

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

The square root of 25220120 is about 5021.9637593276. The cubic root of 25220120 is about 293.2574470823.

Adding to 25220120 its reverse (2102252), we get a palindrome (27322372).

The spelling of 25220120 in words is "twenty-five million, two hundred twenty thousand, one hundred twenty".