25445378 has 16 divisors (see below), whose sum is σ = 43732224. Its totient is φ = 10877280.

The previous prime is 25445341. The next prime is 25445401. The reversal of 25445378 is 87354452.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3926 + ... + 8142.

It is an arithmetic number, because the mean of its divisors is an integer number (2733264).

Almost surely, 2^25445378 is an apocalyptic number.

25445378 is a deficient number, since it is larger than the sum of its proper divisors (18286846).

25445378 is a wasteful number, since it uses less digits than its factorization.

25445378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657.

The product of its digits is 134400, while the sum is 38.

The square root of 25445378 is about 5044.3411859231. The cubic root of 25445378 is about 294.1279542380.

The spelling of 25445378 in words is "twenty-five million, four hundred forty-five thousand, three hundred seventy-eight".