45501021225 has 72 divisors (see below), whose sum is σ = 89977803552. Its totient is φ = 21795206400.

The previous prime is 45501021143. The next prime is 45501021227. The reversal of 45501021225 is 52212010554.

45501021225 is a `hidden beast` number, since 4 + 550 + 102 + 1 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 45501021225 - 2¹⁴ = 45501004841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45501021227) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 94677 + ... + 316173.

It is an arithmetic number, because the mean of its divisors is an integer number (1249691716).

Almost surely, 2^45501021225 is an apocalyptic number.

45501021225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45501021225 is a deficient number, since it is larger than the sum of its proper divisors (44476782327).

45501021225 is a wasteful number, since it uses less digits than its factorization.

45501021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221607 (or 221599 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 45501021225 its reverse (52212010554), we get a palindrome (97713031779).

The spelling of 45501021225 in words is "forty-five billion, five hundred one million, twenty-one thousand, two hundred twenty-five".