225441321525 has 96 divisors (see below), whose sum is σ = 475394810880. Its totient is φ = 102604397760.

The previous prime is 225441321491. The next prime is 225441321527. The reversal of 225441321525 is 525123144522.

225441321525 is a `hidden beast` number, since 2 + 2 + 5 + 4 + 413 + 215 + 25 = 666.

It is not a de Polignac number, because 225441321525 - 2⁶ = 225441321461 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 225441321525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225441321527) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 967482 + ... + 1177668.

It is an arithmetic number, because the mean of its divisors is an integer number (4952029280).

Almost surely, 2^225441321525 is an apocalyptic number.

225441321525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225441321525 is an abundant number, since it is smaller than the sum of its proper divisors (249953489355).

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

225441321525 is a wasteful number, since it uses less digits than its factorization.

225441321525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210440 (or 210429 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 225441321525 in words is "two hundred twenty-five billion, four hundred forty-one million, three hundred twenty-one thousand, five hundred twenty-five".