225501957 has 12 divisors (see below), whose sum is σ = 344885580. Its totient is φ = 141491328.

The previous prime is 225501943. The next prime is 225501977. The reversal of 225501957 is 759105522.

It can be written as a sum of positive squares in 2 ways, for example, as 207532836 + 17969121 = 14406^2 + 4239^2 .

It is not a de Polignac number, because 225501957 - 2¹¹ = 225499909 is a prime.

It is a super-2 number, since 2×225501957² = 101702265221659698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225501907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 736782 + ... + 737087.

It is an arithmetic number, because the mean of its divisors is an integer number (28740465).

Almost surely, 2^225501957 is an apocalyptic number.

It is an amenable number.

225501957 is a deficient number, since it is larger than the sum of its proper divisors (119383623).

225501957 is a wasteful number, since it uses less digits than its factorization.

225501957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473892 (or 1473889 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 225501957 is about 15016.7225785123. The cubic root of 225501957 is about 608.6721604967.

The spelling of 225501957 in words is "two hundred twenty-five million, five hundred one thousand, nine hundred fifty-seven".