25705715 has 12 divisors (see below), whose sum is σ = 35294736. Its totient is φ = 17606208.

The previous prime is 25705711. The next prime is 25705723. The reversal of 25705715 is 51750752.

It is not a de Polignac number, because 25705715 - 2² = 25705711 is a prime.

It is a super-2 number, since 2×25705715² = 1321567567322450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25705711) 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 11 ways as a sum of consecutive naturals, for example, 29567 + ... + 30423.

It is an arithmetic number, because the mean of its divisors is an integer number (2941228).

Almost surely, 2^25705715 is an apocalyptic number.

25705715 is a deficient number, since it is larger than the sum of its proper divisors (9589021).

25705715 is an frugal number, since it uses more digits than its factorization.

25705715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 25705715 is about 5070.0803741164. The cubic root of 25705715 is about 295.1276475259.

The spelling of 25705715 in words is "twenty-five million, seven hundred five thousand, seven hundred fifteen".