25732945 has 32 divisors (see below), whose sum is σ = 37472256. Its totient is φ = 16588800.

The previous prime is 25732943. The next prime is 25732979. The reversal of 25732945 is 54923752.

It is not a de Polignac number, because 25732945 - 2¹ = 25732943 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25732943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39825 + ... + 40465.

It is an arithmetic number, because the mean of its divisors is an integer number (1171008).

Almost surely, 2^25732945 is an apocalyptic number.

It is an amenable number.

25732945 is a deficient number, since it is larger than the sum of its proper divisors (11739311).

25732945 is a wasteful number, since it uses less digits than its factorization.

25732945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its digits is 75600, while the sum is 37.

The square root of 25732945 is about 5072.7650251120. The cubic root of 25732945 is about 295.2318200791.

The spelling of 25732945 in words is "twenty-five million, seven hundred thirty-two thousand, nine hundred forty-five".