25225212232 has 32 divisors (see below), whose sum is σ = 51990919200. Its totient is φ = 11378473600.

The previous prime is 25225212227. The next prime is 25225212247. The reversal of 25225212232 is 23221252252.

It is a super-2 number, since 2×25225212232² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25225212232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082557 + ... + 1105612.

It is an arithmetic number, because the mean of its divisors is an integer number (1624716225).

Almost surely, 2^25225212232 is an apocalyptic number.

25225212232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25225212232 is an abundant number, since it is smaller than the sum of its proper divisors (26765706968).

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

25225212232 is a wasteful number, since it uses less digits than its factorization.

25225212232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188317 (or 2188313 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

Adding to 25225212232 its reverse (23221252252), we get a palindrome (48446464484).

The spelling of 25225212232 in words is "twenty-five billion, two hundred twenty-five million, two hundred twelve thousand, two hundred thirty-two".