25767863 has 8 divisors (see below), whose sum is σ = 29080080. Its totient is φ = 22617280.

The previous prime is 25767853. The next prime is 25767871. The reversal of 25767863 is 36876752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25767863 - 2¹⁸ = 25505719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25767823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40070 + ... + 40707.

It is an arithmetic number, because the mean of its divisors is an integer number (3635010).

Almost surely, 2^25767863 is an apocalyptic number.

25767863 is a deficient number, since it is larger than the sum of its proper divisors (3312217).

25767863 is a wasteful number, since it uses less digits than its factorization.

25767863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80817.

The product of its digits is 423360, while the sum is 44.

The square root of 25767863 is about 5076.2055710934. The cubic root of 25767863 is about 295.3652967742.

Subtracting 25767863 from its reverse (36876752), we obtain a square (11108889 = 3333²).

The spelling of 25767863 in words is "twenty-five million, seven hundred sixty-seven thousand, eight hundred sixty-three".