25740733 has 4 divisors (see below), whose sum is σ = 25762780. Its totient is φ = 25718688.

The previous prime is 25740727. The next prime is 25740739. The reversal of 25740733 is 33704752.

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

It is an interprime number because it is at equal distance from previous prime (25740727) and next prime (25740739).

It can be written as a sum of positive squares in 2 ways, for example, as 12974404 + 12766329 = 3602^2 + 3573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25740733 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 25740695 and 25740704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25740739) 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, 9168 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (6440695).

Almost surely, 2^25740733 is an apocalyptic number.

It is an amenable number.

25740733 is a deficient number, since it is larger than the sum of its proper divisors (22047).

25740733 is a wasteful number, since it uses less digits than its factorization.

25740733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22046.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 25740733 is about 5073.5325957364. The cubic root of 25740733 is about 295.2616007552.

The spelling of 25740733 in words is "twenty-five million, seven hundred forty thousand, seven hundred thirty-three".