22525272 has 192 divisors, whose sum is σ = 80870400. Its totient is φ = 5483520.

The previous prime is 22525271. The next prime is 22525273. The reversal of 22525272 is 27252522.

It is an interprime number because it is at equal distance from previous prime (22525271) and next prime (22525273).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22525271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94129 + ... + 94367.

It is an arithmetic number, because the mean of its divisors is an integer number (421200).

Almost surely, 2^22525272 is an apocalyptic number.

22525272 is a gapful number since it is divisible by the number (22) 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 22525272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40435200).

22525272 is an abundant number, since it is smaller than the sum of its proper divisors (58345128).

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

22525272 is a wasteful number, since it uses less digits than its factorization.

22525272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 279 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 22525272 is about 4746.0796453494. The cubic root of 22525272 is about 282.4164662827.

Adding to 22525272 its reverse (27252522), we get a palindrome (49777794).

It can be divided in two parts, 2252527 and 2, that multiplied together give a palindrome (4505054).

The spelling of 22525272 in words is "twenty-two million, five hundred twenty-five thousand, two hundred seventy-two".