25920761 has 4 divisors (see below), whose sum is σ = 25961472. Its totient is φ = 25880052.

The previous prime is 25920737. The next prime is 25920779. The reversal of 25920761 is 16702952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25920761 - 2¹⁴ = 25904377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25970761) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19385 + ... + 20678.

It is an arithmetic number, because the mean of its divisors is an integer number (6490368).

Almost surely, 2^25920761 is an apocalyptic number.

It is an amenable number.

25920761 is a deficient number, since it is larger than the sum of its proper divisors (40711).

25920761 is an equidigital number, since it uses as much as digits as its factorization.

25920761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40710.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 25920761 is about 5091.2435612530. The cubic root of 25920761 is about 295.9483451681.

The spelling of 25920761 in words is "twenty-five million, nine hundred twenty thousand, seven hundred sixty-one".