25254220 has 12 divisors (see below), whose sum is σ = 53033904. Its totient is φ = 10101680.

The previous prime is 25254217. The next prime is 25254221. The reversal of 25254220 is 2245252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25254191 and 25254200.

It is not an unprimeable number, because it can be changed into a prime (25254221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631336 + ... + 631375.

It is an arithmetic number, because the mean of its divisors is an integer number (4419492).

Almost surely, 2^25254220 is an apocalyptic number.

25254220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25254220 is an abundant number, since it is smaller than the sum of its proper divisors (27779684).

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

25254220 is a wasteful number, since it uses less digits than its factorization.

25254220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262720 (or 1262718 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25254220 is about 5025.3576987116. The cubic root of 25254220 is about 293.3895582077.

Adding to 25254220 its reverse (2245252), we get a palindrome (27499472).

The spelling of 25254220 in words is "twenty-five million, two hundred fifty-four thousand, two hundred twenty".