225715213507644 has 72 divisors (see below), whose sum is σ = 652288041175680. Its totient is φ = 64468117932192.

The previous prime is 225715213507621. The next prime is 225715213507673. The reversal of 225715213507644 is 446705312517522.

225715213507644 is a `hidden beast` number, since 2 + 2 + 5 + 7 + 1 + 521 + 3 + 5 + 0 + 76 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151640334 + ... + 153121589.

It is an arithmetic number, because the mean of its divisors is an integer number (9059556127440).

Almost surely, 2^{225715213507644} is an apocalyptic number.

It is an amenable number.

225715213507644 is an abundant number, since it is smaller than the sum of its proper divisors (426572827668036).

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

225715213507644 is a wasteful number, since it uses less digits than its factorization.

225715213507644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304764879 (or 304764874 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 54.

The spelling of 225715213507644 in words is "two hundred twenty-five trillion, seven hundred fifteen billion, two hundred thirteen million, five hundred seven thousand, six hundred forty-four".