225966451690 has 32 divisors (see below), whose sum is σ = 480874423680. Its totient is φ = 74802686784.

The previous prime is 225966451657. The next prime is 225966451691. The reversal of 225966451690 is 96154669522.

It is a super-2 number, since 2×225966451690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225966451691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55654732 + ... + 55658791.

It is an arithmetic number, because the mean of its divisors is an integer number (15027325740).

Almost surely, 2^225966451690 is an apocalyptic number.

225966451690 is an abundant number, since it is smaller than the sum of its proper divisors (254907971990).

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

225966451690 is a wasteful number, since it uses less digits than its factorization.

225966451690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111313566.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 225966451690 in words is "two hundred twenty-five billion, nine hundred sixty-six million, four hundred fifty-one thousand, six hundred ninety".