45209525 has 12 divisors (see below), whose sum is σ = 56172000. Its totient is φ = 36095280.

The previous prime is 45209497. The next prime is 45209599. The reversal of 45209525 is 52590254.

It is not a de Polignac number, because 45209525 - 2²⁴ = 28432309 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45209491 and 45209500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13466 + ... + 16484.

It is an arithmetic number, because the mean of its divisors is an integer number (4681000).

Almost surely, 2^45209525 is an apocalyptic number.

It is an amenable number.

45209525 is a deficient number, since it is larger than the sum of its proper divisors (10962475).

45209525 is a wasteful number, since it uses less digits than its factorization.

45209525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628 (or 3623 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 45209525 is about 6723.8028674255. The cubic root of 45209525 is about 356.2405188818.

Adding to 45209525 its reverse (52590254), we get a palindrome (97799779).

The spelling of 45209525 in words is "forty-five million, two hundred nine thousand, five hundred twenty-five".