225878458067690 has 16 divisors (see below), whose sum is σ = 406588191277320. Its totient is φ = 90349835059200.

The previous prime is 225878458067677. The next prime is 225878458067699. The reversal of 225878458067690 is 96760854878522.

It can be written as a sum of positive squares in 4 ways, for example, as 157130762702761 + 68747695364929 = 12535181^2 + 8291423^2 .

It is a super-2 number, since 2×225878458067690² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225878458067699) 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, 192908111 + ... + 194075490.

Almost surely, 2^{225878458067690} is an apocalyptic number.

225878458067690 is a deficient number, since it is larger than the sum of its proper divisors (180709733209630).

225878458067690 is a wasteful number, since it uses less digits than its factorization.

225878458067690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387041977.

The product of its (nonzero) digits is 3251404800, while the sum is 77.

The spelling of 225878458067690 in words is "two hundred twenty-five trillion, eight hundred seventy-eight billion, four hundred fifty-eight million, sixty-seven thousand, six hundred ninety".