25570745 has 4 divisors (see below), whose sum is σ = 30684900. Its totient is φ = 20456592.

The previous prime is 25570739. The next prime is 25570759. The reversal of 25570745 is 54707552.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5248681 + 20322064 = 2291^2 + 4508^2 .

It is a cyclic number.

It is not a de Polignac number, because 25570745 - 2¹² = 25566649 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2557070 + ... + 2557079.

It is an arithmetic number, because the mean of its divisors is an integer number (7671225).

Almost surely, 2^25570745 is an apocalyptic number.

It is an amenable number.

25570745 is a deficient number, since it is larger than the sum of its proper divisors (5114155).

25570745 is an equidigital number, since it uses as much as digits as its factorization.

25570745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114154.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 25570745 is about 5056.7524163241. The cubic root of 25570745 is about 294.6102100764.

The spelling of 25570745 in words is "twenty-five million, five hundred seventy thousand, seven hundred forty-five".