25570255 has 4 divisors (see below), whose sum is σ = 30684312. Its totient is φ = 20456200.

The previous prime is 25570253. The next prime is 25570289. The reversal of 25570255 is 55207552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25570255 - 2¹ = 25570253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25570253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557021 + ... + 2557030.

It is an arithmetic number, because the mean of its divisors is an integer number (7671078).

Almost surely, 2^25570255 is an apocalyptic number.

25570255 is a deficient number, since it is larger than the sum of its proper divisors (5114057).

25570255 is an equidigital number, since it uses as much as digits as its factorization.

25570255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114056.

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 25570255 is about 5056.7039660237. The cubic root of 25570255 is about 294.6083282394.

The spelling of 25570255 in words is "twenty-five million, five hundred seventy thousand, two hundred fifty-five".