225737649 has 12 divisors (see below), whose sum is σ = 326741376. Its totient is φ = 150179832.

The previous prime is 225737627. The next prime is 225737657. The reversal of 225737649 is 946737522.

225737649 is a `hidden beast` number, since 2 + 2 + 573 + 76 + 4 + 9 = 666.

It is not a de Polignac number, because 225737649 - 2¹² = 225733553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225737609) 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 11 ways as a sum of consecutive naturals, for example, 21369 + ... + 30134.

It is an arithmetic number, because the mean of its divisors is an integer number (27228448).

Almost surely, 2^225737649 is an apocalyptic number.

It is an amenable number.

225737649 is a deficient number, since it is larger than the sum of its proper divisors (101003727).

225737649 is a wasteful number, since it uses less digits than its factorization.

225737649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51996 (or 51993 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 225737649 is about 15024.5681801508. The cubic root of 225737649 is about 608.8841456596.

The spelling of 225737649 in words is "two hundred twenty-five million, seven hundred thirty-seven thousand, six hundred forty-nine".