25240064 has 20 divisors (see below), whose sum is σ = 50431854. Its totient is φ = 12619776.

The previous prime is 25240057. The next prime is 25240067. The reversal of 25240064 is 46004252.

It can be written as a sum of positive squares in only one way, i.e., 25080064 + 160000 = 5008^2 + 400^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25240067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24137 + ... + 25160.

Almost surely, 2^25240064 is an apocalyptic number.

It is an amenable number.

25240064 is a deficient number, since it is larger than the sum of its proper divisors (25191790).

25240064 is an frugal number, since it uses more digits than its factorization.

25240064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49315 (or 49299 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 25240064 is about 5023.9490443276. The cubic root of 25240064 is about 293.3347291026.

The spelling of 25240064 in words is "twenty-five million, two hundred forty thousand, sixty-four".