243474525 has 72 divisors (see below), whose sum is σ = 513429440. Its totient is φ = 110812320.

The previous prime is 243474521. The next prime is 243474529. The reversal of 243474525 is 525474342.

It is an interprime number because it is at equal distance from previous prime (243474521) and next prime (243474529).

It is not a de Polignac number, because 243474525 - 2² = 243474521 is a prime.

Its product of digits (134400) is a multiple of the sum of its prime factors (480).

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 243474525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243474521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1072462 + ... + 1072688.

Almost surely, 2^243474525 is an apocalyptic number.

243474525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243474525 is an abundant number, since it is smaller than the sum of its proper divisors (269954915).

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

243474525 is an equidigital number, since it uses as much as digits as its factorization.

243474525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 242 counting only the distinct ones).

The product of its digits is 134400, while the sum is 36.

The square root of 243474525 is about 15603.6702413246. The cubic root of 243474525 is about 624.4310769463.

Multiplying 243474525 by its product of digits (134400), we get a square (32722976160000 = 5720400²).

The spelling of 243474525 in words is "two hundred forty-three million, four hundred seventy-four thousand, five hundred twenty-five".