25730655 has 32 divisors (see below), whose sum is σ = 43718400. Its totient is φ = 12886272.

The previous prime is 25730647. The next prime is 25730681. The reversal of 25730655 is 55603752.

It is not a de Polignac number, because 25730655 - 2³ = 25730647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38716 + ... + 39374.

It is an arithmetic number, because the mean of its divisors is an integer number (1366200).

Almost surely, 2^25730655 is an apocalyptic number.

25730655 is a deficient number, since it is larger than the sum of its proper divisors (17987745).

25730655 is a wasteful number, since it uses less digits than its factorization.

25730655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 25730655 is about 5072.5393049241. The cubic root of 25730655 is about 295.2230621630.

The spelling of 25730655 in words is "twenty-five million, seven hundred thirty thousand, six hundred fifty-five".