25782069 has 32 divisors (see below), whose sum is σ = 37818880. Its totient is φ = 15567552.

The previous prime is 25782059. The next prime is 25782089. The reversal of 25782069 is 96028752.

It is a happy number.

It is not a de Polignac number, because 25782069 - 2⁵ = 25782037 is a prime.

It is a super-2 number, since 2×25782069² = 1329430163841522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25782019) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 164139 + ... + 164295.

It is an arithmetic number, because the mean of its divisors is an integer number (1181840).

Almost surely, 2^25782069 is an apocalyptic number.

It is an amenable number.

25782069 is a deficient number, since it is larger than the sum of its proper divisors (12036811).

25782069 is a wasteful number, since it uses less digits than its factorization.

25782069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 25782069 is about 5077.6046518019. The cubic root of 25782069 is about 295.4195657753.

The spelling of 25782069 in words is "twenty-five million, seven hundred eighty-two thousand, sixty-nine".