225724252641 has 4 divisors (see below), whose sum is σ = 300965670192. Its totient is φ = 150482835092.

The previous prime is 225724252613. The next prime is 225724252679. The reversal of 225724252641 is 146252427522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225724252641 - 2¹⁹ = 225723728353 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225724252593 and 225724252602.

It is not an unprimeable number, because it can be changed into a prime (225724252141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37620708771 + ... + 37620708776.

It is an arithmetic number, because the mean of its divisors is an integer number (75241417548).

Almost surely, 2^225724252641 is an apocalyptic number.

It is an amenable number.

225724252641 is a deficient number, since it is larger than the sum of its proper divisors (75241417551).

225724252641 is an equidigital number, since it uses as much as digits as its factorization.

225724252641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75241417550.

The product of its digits is 537600, while the sum is 42.

The spelling of 225724252641 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred fifty-two thousand, six hundred forty-one".