225386581040 has 40 divisors (see below), whose sum is σ = 526683857040. Its totient is φ = 89696988416.

The previous prime is 225386580983. The next prime is 225386581051. The reversal of 225386581040 is 40185683522.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×225386581040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225386580982 and 225386581000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7134830 + ... + 7166349.

It is an arithmetic number, because the mean of its divisors is an integer number (13167096426).

Almost surely, 2^225386581040 is an apocalyptic number.

225386581040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225386581040 is an abundant number, since it is smaller than the sum of its proper divisors (301297276000).

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

225386581040 is a wasteful number, since it uses less digits than its factorization.

225386581040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14301389 (or 14301383 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 225386581040 in words is "two hundred twenty-five billion, three hundred eighty-six million, five hundred eighty-one thousand, forty".