25715930 has 16 divisors (see below), whose sum is σ = 48725280. Its totient is φ = 9744912.

The previous prime is 25715923. The next prime is 25715939. The reversal of 25715930 is 3951752.

It is a super-2 number, since 2×25715930² = 1322618111529800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25715939) 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 7 ways as a sum of consecutive naturals, for example, 67484 + ... + 67863.

It is an arithmetic number, because the mean of its divisors is an integer number (3045330).

Almost surely, 2^25715930 is an apocalyptic number.

25715930 is a deficient number, since it is larger than the sum of its proper divisors (23009350).

25715930 is a wasteful number, since it uses less digits than its factorization.

25715930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135373.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 25715930 is about 5071.0876545372. The cubic root of 25715930 is about 295.1667351980.

The spelling of 25715930 in words is "twenty-five million, seven hundred fifteen thousand, nine hundred thirty".