25850145 has 16 divisors (see below), whose sum is σ = 41447232. Its totient is φ = 13757760.

The previous prime is 25850129. The next prime is 25850147. The reversal of 25850145 is 54105852.

It is not a de Polignac number, because 25850145 - 2⁴ = 25850129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25850147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6915 + ... + 9975.

It is an arithmetic number, because the mean of its divisors is an integer number (2590452).

Almost surely, 2^25850145 is an apocalyptic number.

It is an amenable number.

25850145 is a deficient number, since it is larger than the sum of its proper divisors (15597087).

25850145 is a wasteful number, since it uses less digits than its factorization.

25850145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 25850145 is about 5084.3037871473. The cubic root of 25850145 is about 295.6793497834.

Adding to 25850145 its reverse (54105852), we get a palindrome (79955997).

It can be divided in two parts, 258 and 50145, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 25850145 in words is "twenty-five million, eight hundred fifty thousand, one hundred forty-five".