225657949 has 32 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 187084800.

The previous prime is 225657923. The next prime is 225657953. The reversal of 225657949 is 949756522.

It is a cyclic number.

It is not a de Polignac number, because 225657949 - 2⁷ = 225657821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225657349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1246639 + ... + 1246819.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^225657949 is an apocalyptic number.

It is an amenable number.

225657949 is a deficient number, since it is larger than the sum of its proper divisors (43236131).

225657949 is a wasteful number, since it uses less digits than its factorization.

225657949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

The product of its digits is 1360800, while the sum is 49.

The square root of 225657949 is about 15021.9156235149. The cubic root of 225657949 is about 608.8124787210.

The spelling of 225657949 in words is "two hundred twenty-five million, six hundred fifty-seven thousand, nine hundred forty-nine".