25206069 has 24 divisors (see below), whose sum is σ = 39720000. Its totient is φ = 13927680.

The previous prime is 25206067. The next prime is 25206089. The reversal of 25206069 is 96060252.

It is not a de Polignac number, because 25206069 - 2¹ = 25206067 is a prime.

It is a super-2 number, since 2×25206069² = 1270691828865522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25206061) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19557 + ... + 20805.

It is an arithmetic number, because the mean of its divisors is an integer number (1655000).

Almost surely, 2^25206069 is an apocalyptic number.

It is an amenable number.

25206069 is a deficient number, since it is larger than the sum of its proper divisors (14513931).

25206069 is a wasteful number, since it uses less digits than its factorization.

25206069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 25206069 is about 5020.5646096829. The cubic root of 25206069 is about 293.2029756806.

The spelling of 25206069 in words is "twenty-five million, two hundred six thousand, sixty-nine".