45405525 has 48 divisors (see below), whose sum is σ = 83708928. Its totient is φ = 21528000.

The previous prime is 45405511. The next prime is 45405527. The reversal of 45405525 is 52550454.

It is not a de Polignac number, because 45405525 - 2⁴ = 45405509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45405492 and 45405501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45405527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38190 + ... + 39360.

It is an arithmetic number, because the mean of its divisors is an integer number (1743936).

Almost surely, 2^45405525 is an apocalyptic number.

It is an amenable number.

45405525 is a deficient number, since it is larger than the sum of its proper divisors (38303403).

45405525 is a wasteful number, since it uses less digits than its factorization.

45405525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 45405525 is about 6738.3621897313. The cubic root of 45405525 is about 356.7545881403.

Adding to 45405525 its reverse (52550454), we get a palindrome (97955979).

Subtracting 45405525 from its reverse (52550454), we obtain a square (7144929 = 2673²).

The spelling of 45405525 in words is "forty-five million, four hundred five thousand, five hundred twenty-five".