225497251944 has 64 divisors (see below), whose sum is σ = 663227222400. Its totient is φ = 70744234752.

The previous prime is 225497251933. The next prime is 225497251949. The reversal of 225497251944 is 449152794522.

225497251944 is a `hidden beast` number, since 2 + 2 + 54 + 9 + 72 + 519 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (225497251949) 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 15 ways as a sum of consecutive naturals, for example, 30701292 + ... + 30708635.

It is an arithmetic number, because the mean of its divisors is an integer number (10362925350).

Almost surely, 2^225497251944 is an apocalyptic number.

225497251944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

225497251944 is an abundant number, since it is smaller than the sum of its proper divisors (437729970456).

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

225497251944 is a wasteful number, since it uses less digits than its factorization.

225497251944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61409959 (or 61409949 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 225497251944 in words is "two hundred twenty-five billion, four hundred ninety-seven million, two hundred fifty-one thousand, nine hundred forty-four".