225723747402 has 48 divisors (see below), whose sum is σ = 513387987840. Its totient is φ = 71538911136.

The previous prime is 225723747401. The next prime is 225723747419. The reversal of 225723747402 is 204747327522.

225723747402 is a `hidden beast` number, since 2 + 2 + 5 + 7 + 237 + 4 + 7 + 402 = 666.

It is not an unprimeable number, because it can be changed into a prime (225723747401) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1563277 + ... + 1701552.

It is an arithmetic number, because the mean of its divisors is an integer number (10695583080).

Almost surely, 2^225723747402 is an apocalyptic number.

225723747402 is an abundant number, since it is smaller than the sum of its proper divisors (287664240438).

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

225723747402 is a wasteful number, since it uses less digits than its factorization.

225723747402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265027 (or 3265024 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 45.

The spelling of 225723747402 in words is "two hundred twenty-five billion, seven hundred twenty-three million, seven hundred forty-seven thousand, four hundred two".