25473945 has 64 divisors (see below), whose sum is σ = 49029120. Its totient is φ = 11052288.

The previous prime is 25473937. The next prime is 25473967. The reversal of 25473945 is 54937452.

It is not a de Polignac number, because 25473945 - 2³ = 25473937 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 306874 + ... + 306956.

It is an arithmetic number, because the mean of its divisors is an integer number (766080).

Almost surely, 2^25473945 is an apocalyptic number.

It is an amenable number.

25473945 is a deficient number, since it is larger than the sum of its proper divisors (23555175).

25473945 is a wasteful number, since it uses less digits than its factorization.

25473945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 151200, while the sum is 39.

The square root of 25473945 is about 5047.1719804263. The cubic root of 25473945 is about 294.2379835309.

The spelling of 25473945 in words is "twenty-five million, four hundred seventy-three thousand, nine hundred forty-five".