25748761 has 4 divisors (see below), whose sum is σ = 27263412. Its totient is φ = 24234112.

The previous prime is 25748741. The next prime is 25748773. The reversal of 25748761 is 16784752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21566736 + 4182025 = 4644^2 + 2045^2 .

It is not a de Polignac number, because 25748761 - 2⁵ = 25748729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25748711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757300 + ... + 757333.

It is an arithmetic number, because the mean of its divisors is an integer number (6815853).

Almost surely, 2^25748761 is an apocalyptic number.

It is an amenable number.

25748761 is a deficient number, since it is larger than the sum of its proper divisors (1514651).

25748761 is a wasteful number, since it uses less digits than its factorization.

25748761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514650.

The product of its digits is 94080, while the sum is 40.

The square root of 25748761 is about 5074.3236987800. The cubic root of 25748761 is about 295.2922928849.

The spelling of 25748761 in words is "twenty-five million, seven hundred forty-eight thousand, seven hundred sixty-one".