25580955 has 8 divisors (see below), whose sum is σ = 40929552. Its totient is φ = 13643168.

The previous prime is 25580941. The next prime is 25580959. The reversal of 25580955 is 55908552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25580955 - 2⁴ = 25580939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25580959) 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 7 ways as a sum of consecutive naturals, for example, 852684 + ... + 852713.

It is an arithmetic number, because the mean of its divisors is an integer number (5116194).

Almost surely, 2^25580955 is an apocalyptic number.

25580955 is a deficient number, since it is larger than the sum of its proper divisors (15348597).

25580955 is a wasteful number, since it uses less digits than its factorization.

25580955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705405.

The product of its (nonzero) digits is 90000, while the sum is 39.

The square root of 25580955 is about 5057.7618567900. The cubic root of 25580955 is about 294.6494159474.

It can be divided in two parts, 255 and 80955, that multiplied together give a triangular number (20643525 = T₆₄₂₅).

The spelling of 25580955 in words is "twenty-five million, five hundred eighty thousand, nine hundred fifty-five".