225715213507645 has 8 divisors (see below), whose sum is σ = 282634702131456. Its totient is φ = 172721206857936.

The previous prime is 225715213507621. The next prime is 225715213507673. The reversal of 225715213507645 is 546705312517522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225715213507645 - 2¹³ = 225715213499453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981370493397 + ... + 981370493626.

It is an arithmetic number, because the mean of its divisors is an integer number (35329337766432).

Almost surely, 2^{225715213507645} is an apocalyptic number.

It is an amenable number.

225715213507645 is a deficient number, since it is larger than the sum of its proper divisors (56919488623811).

225715213507645 is a wasteful number, since it uses less digits than its factorization.

225715213507645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962740987051.

The product of its (nonzero) digits is 17640000, while the sum is 55.

The spelling of 225715213507645 in words is "two hundred twenty-five trillion, seven hundred fifteen billion, two hundred thirteen million, five hundred seven thousand, six hundred forty-five".