25416945 has 24 divisors (see below), whose sum is σ = 44891496. Its totient is φ = 13298688.

The previous prime is 25416929. The next prime is 25416967. The reversal of 25416945 is 54961452.

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 24770529 = 804^2 + 4977^2 .

It is not a de Polignac number, because 25416945 - 2⁴ = 25416929 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2944 + ... + 7713.

It is an arithmetic number, because the mean of its divisors is an integer number (1870479).

Almost surely, 2^25416945 is an apocalyptic number.

It is an amenable number.

25416945 is a deficient number, since it is larger than the sum of its proper divisors (19474551).

25416945 is a wasteful number, since it uses less digits than its factorization.

25416945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10721 (or 10718 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 25416945 is about 5041.5220915910. The cubic root of 25416945 is about 294.0183592589.

The spelling of 25416945 in words is "twenty-five million, four hundred sixteen thousand, nine hundred forty-five".