25225524 has 36 divisors (see below), whose sum is σ = 64393056. Its totient is φ = 8325648.

The previous prime is 25225523. The next prime is 25225553. The reversal of 25225524 is 42552252.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×25225524² = 1272654122149152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25225523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307 + ... + 7109.

It is an arithmetic number, because the mean of its divisors is an integer number (1788696).

Almost surely, 2^25225524 is an apocalyptic number.

It is an amenable number.

25225524 is an abundant number, since it is smaller than the sum of its proper divisors (39167532).

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

25225524 is a wasteful number, since it uses less digits than its factorization.

25225524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6916 (or 6911 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 25225524 is about 5022.5017670480. The cubic root of 25225524 is about 293.2783913398.

Adding to 25225524 its reverse (42552252), we get a palindrome (67777776).

The spelling of 25225524 in words is "twenty-five million, two hundred twenty-five thousand, five hundred twenty-four".