25722580 has 96 divisors (see below), whose sum is σ = 63221760. Its totient is φ = 8709120.

The previous prime is 25722577. The next prime is 25722589. The reversal of 25722580 is 8522752.

It is a super-2 number, since 2×25722580² = 1323302243712800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25722589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202477 + ... + 202603.

It is an arithmetic number, because the mean of its divisors is an integer number (658560).

Almost surely, 2^25722580 is an apocalyptic number.

25722580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25722580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31610880).

25722580 is an abundant number, since it is smaller than the sum of its proper divisors (37499180).

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

25722580 is a wasteful number, since it uses less digits than its factorization.

25722580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25722580 is about 5071.7432900335. The cubic root of 25722580 is about 295.1921758440.

The spelling of 25722580 in words is "twenty-five million, seven hundred twenty-two thousand, five hundred eighty".