225761649 has 8 divisors (see below), whose sum is σ = 318722400. Its totient is φ = 141654336.

The previous prime is 225761617. The next prime is 225761681. The reversal of 225761649 is 946167522.

It is an interprime number because it is at equal distance from previous prime (225761617) and next prime (225761681).

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

It is not a de Polignac number, because 225761649 - 2⁵ = 225761617 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 225761649.

It is not an unprimeable number, because it can be changed into a prime (225761449) 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, 2213299 + ... + 2213400.

It is an arithmetic number, because the mean of its divisors is an integer number (39840300).

Almost surely, 2^225761649 is an apocalyptic number.

It is an amenable number.

225761649 is a deficient number, since it is larger than the sum of its proper divisors (92960751).

225761649 is a wasteful number, since it uses less digits than its factorization.

225761649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426719.

The product of its digits is 181440, while the sum is 42.

The square root of 225761649 is about 15025.3668507627. The cubic root of 225761649 is about 608.9057233653.

The spelling of 225761649 in words is "two hundred twenty-five million, seven hundred sixty-one thousand, six hundred forty-nine".