25740724 has 12 divisors (see below), whose sum is σ = 45208548. Its totient is φ = 12824000.

The previous prime is 25740713. The next prime is 25740727. The reversal of 25740724 is 42704752.

It can be written as a sum of positive squares in 2 ways, for example, as 22391824 + 3348900 = 4732^2 + 1830^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25740727) 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, 10327 + ... + 12574.

It is an arithmetic number, because the mean of its divisors is an integer number (3767379).

Almost surely, 2^25740724 is an apocalyptic number.

It is an amenable number.

25740724 is a deficient number, since it is larger than the sum of its proper divisors (19467824).

25740724 is a wasteful number, since it uses less digits than its factorization.

25740724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23186 (or 23184 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 25740724 is about 5073.5317087804. The cubic root of 25740724 is about 295.2615663434.

The spelling of 25740724 in words is "twenty-five million, seven hundred forty thousand, seven hundred twenty-four".