25220316 has 48 divisors (see below), whose sum is σ = 67979520. Its totient is φ = 7192320.

The previous prime is 25220303. The next prime is 25220339. The reversal of 25220316 is 61302252.

25220316 = 1210² + 1211² + ... + 1226².

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 25220292 and 25220301.

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 15 ways as a sum of consecutive naturals, for example, 3376 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (1416240).

Almost surely, 2^25220316 is an apocalyptic number.

It is an amenable number.

25220316 is an abundant number, since it is smaller than the sum of its proper divisors (42759204).

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

25220316 is a wasteful number, since it uses less digits than its factorization.

25220316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274 (or 11272 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 25220316 is about 5021.9832735683. The cubic root of 25220316 is about 293.2582067708.

Adding to 25220316 its reverse (61302252), we get a palindrome (86522568).

The spelling of 25220316 in words is "twenty-five million, two hundred twenty thousand, three hundred sixteen".