45225033021 has 24 divisors (see below), whose sum is σ = 77422281664. Its totient is φ = 25842875040.

The previous prime is 45225033017. The next prime is 45225033053. The reversal of 45225033021 is 12033052254.

It is a happy number.

It is not a de Polignac number, because 45225033021 - 2² = 45225033017 is a prime.

It is a super-2 number, since 2×45225033021² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45225033011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13291960 + ... + 13295361.

Almost surely, 2^45225033021 is an apocalyptic number.

It is an amenable number.

45225033021 is a deficient number, since it is larger than the sum of its proper divisors (32197248643).

45225033021 is an equidigital number, since it uses as much as digits as its factorization.

45225033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26587343 (or 26587331 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 45225033021 its reverse (12033052254), we get a palindrome (57258085275).

The spelling of 45225033021 in words is "forty-five billion, two hundred twenty-five million, thirty-three thousand, twenty-one".