25765904 has 10 divisors (see below), whose sum is σ = 49921470. Its totient is φ = 12882944.

The previous prime is 25765879. The next prime is 25765907. The reversal of 25765904 is 40956752.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 565504 = 5020^2 + 752^2 .

It is not an unprimeable number, because it can be changed into a prime (25765907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805169 + ... + 805200.

It is an arithmetic number, because the mean of its divisors is an integer number (4992147).

Almost surely, 2^25765904 is an apocalyptic number.

It is an amenable number.

25765904 is a deficient number, since it is larger than the sum of its proper divisors (24155566).

25765904 is a wasteful number, since it uses less digits than its factorization.

25765904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610377 (or 1610371 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 25765904 is about 5076.0126083374. The cubic root of 25765904 is about 295.3578115424.

The spelling of 25765904 in words is "twenty-five million, seven hundred sixty-five thousand, nine hundred four".