225690148 has 6 divisors (see below), whose sum is σ = 394957766. Its totient is φ = 112845072.

The previous prime is 225690139. The next prime is 225690149. The reversal of 225690148 is 841096522.

It can be written as a sum of positive squares in only one way, i.e., 196616484 + 29073664 = 14022^2 + 5392^2 .

It is not an unprimeable number, because it can be changed into a prime (225690149) 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 as a sum of consecutive naturals, namely, 28211265 + ... + 28211272.

Almost surely, 2^225690148 is an apocalyptic number.

It is an amenable number.

225690148 is a deficient number, since it is larger than the sum of its proper divisors (169267618).

225690148 is a wasteful number, since it uses less digits than its factorization.

225690148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56422541 (or 56422539 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 225690148 is about 15022.9873194382. The cubic root of 225690148 is about 608.8414343753.

The spelling of 225690148 in words is "two hundred twenty-five million, six hundred ninety thousand, one hundred forty-eight".