25706145 has 16 divisors (see below), whose sum is σ = 43295040. Its totient is φ = 12988224.

The previous prime is 25706129. The next prime is 25706167. The reversal of 25706145 is 54160752.

It is not a de Polignac number, because 25706145 - 2⁴ = 25706129 is a prime.

It is a super-2 number, since 2×25706145² = 1321611781522050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44814 + ... + 45383.

It is an arithmetic number, because the mean of its divisors is an integer number (2705940).

Almost surely, 2^25706145 is an apocalyptic number.

It is an amenable number.

25706145 is a deficient number, since it is larger than the sum of its proper divisors (17588895).

25706145 is a wasteful number, since it uses less digits than its factorization.

25706145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90224.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 25706145 is about 5070.1227795784. The cubic root of 25706145 is about 295.1292931286.

Adding to 25706145 its reverse (54160752), we get a palindrome (79866897).

The spelling of 25706145 in words is "twenty-five million, seven hundred six thousand, one hundred forty-five".