45450025 has 12 divisors (see below), whose sum is σ = 56497500. Its totient is φ = 36270080.

The previous prime is 45450007. The next prime is 45450049. The reversal of 45450025 is 52005454.

It can be written as a sum of positive squares in 6 ways, for example, as 2166784 + 43283241 = 1472^2 + 6579^2 .

It is not a de Polignac number, because 45450025 - 2¹⁵ = 45417257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 9201 + ... + 13249.

It is an arithmetic number, because the mean of its divisors is an integer number (4708125).

Almost surely, 2^45450025 is an apocalyptic number.

It is an amenable number.

45450025 is a deficient number, since it is larger than the sum of its proper divisors (11047475).

45450025 is a wasteful number, since it uses less digits than its factorization.

45450025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4503 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 45450025 is about 6741.6633704153. The cubic root of 45450025 is about 356.8710966905.

Adding to 45450025 its reverse (52005454), we get a palindrome (97455479).

The spelling of 45450025 in words is "forty-five million, four hundred fifty thousand, twenty-five".