25880069 has 4 divisors (see below), whose sum is σ = 27402444. Its totient is φ = 24357696.

The previous prime is 25880053. The next prime is 25880077. The reversal of 25880069 is 96008852.

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 19936225 + 5943844 = 4465^2 + 2438^2 .

It is a cyclic number.

It is not a de Polignac number, because 25880069 - 2⁴ = 25880053 is a prime.

It is a super-3 number, since 3×25880069³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25880269) 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 3 ways as a sum of consecutive naturals, for example, 761162 + ... + 761195.

It is an arithmetic number, because the mean of its divisors is an integer number (6850611).

Almost surely, 2^25880069 is an apocalyptic number.

It is an amenable number.

25880069 is a deficient number, since it is larger than the sum of its proper divisors (1522375).

25880069 is a wasteful number, since it uses less digits than its factorization.

25880069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522374.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 25880069 is about 5087.2457184610. The cubic root of 25880069 is about 295.7933981051.

The spelling of 25880069 in words is "twenty-five million, eight hundred eighty thousand, sixty-nine".