225537390 has 48 divisors (see below), whose sum is σ = 631507968. Its totient is φ = 55516608.

The previous prime is 225537373. The next prime is 225537407. The reversal of 225537390 is 93735522.

It is an interprime number because it is at equal distance from previous prime (225537373) and next prime (225537407).

It is a super-2 number, since 2×225537390² = 101734228576024200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 95214 + ... + 97553.

It is an arithmetic number, because the mean of its divisors is an integer number (13156416).

Almost surely, 2^225537390 is an apocalyptic number.

225537390 is an abundant number, since it is smaller than the sum of its proper divisors (405970578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225537390 is a wasteful number, since it uses less digits than its factorization.

225537390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192793 (or 192790 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 225537390 is about 15017.9023169017. The cubic root of 225537390 is about 608.7040389358.

The spelling of 225537390 in words is "two hundred twenty-five million, five hundred thirty-seven thousand, three hundred ninety".