25220484 has 81 divisors (see below), whose sum is σ = 68404791. Its totient is φ = 8135640.

The previous prime is 25220479. The next prime is 25220491. The reversal of 25220484 is 48402252.

It is a happy number.

The square root of 25220484 is 5022.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (81).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 813549 + ... + 813579.

Almost surely, 2^25220484 is an apocalyptic number.

25220484 is the 5022-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25220484

25220484 is an abundant number, since it is smaller than the sum of its proper divisors (43184307).

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

25220484 is an frugal number, since it uses more digits than its factorization.

25220484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The cubic root of 25220484 is about 293.2588579293.

It can be divided in two parts, 252 and 20484, that added together give a 4-th power (20736 = 12⁴).

The spelling of 25220484 in words is "twenty-five million, two hundred twenty thousand, four hundred eighty-four".