225605736437 has 8 divisors (see below), whose sum is σ = 233398502400. Its totient is φ = 217813854384.

The previous prime is 225605736383. The next prime is 225605736457. The reversal of 225605736437 is 734637506522.

It is a happy number.

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 225605736437 - 2¹⁸ = 225605474293 is a prime.

It is a super-2 number, since 2×225605736437² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225605736457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320864 + ... + 744422.

It is an arithmetic number, because the mean of its divisors is an integer number (29174812800).

Almost surely, 2^225605736437 is an apocalyptic number.

It is an amenable number.

225605736437 is a deficient number, since it is larger than the sum of its proper divisors (7792765963).

225605736437 is a wasteful number, since it uses less digits than its factorization.

225605736437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441955.

The product of its (nonzero) digits is 6350400, while the sum is 50.

The spelling of 225605736437 in words is "two hundred twenty-five billion, six hundred five million, seven hundred thirty-six thousand, four hundred thirty-seven".