25779045 has 16 divisors (see below), whose sum is σ = 41627520. Its totient is φ = 13621824.

The previous prime is 25779031. The next prime is 25779107. The reversal of 25779045 is 54097752.

It is not a de Polignac number, because 25779045 - 2⁶ = 25778981 is a prime.

It is a super-2 number, since 2×25779045² = 1329118322224050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25778994 and 25779012.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6249 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (2601720).

Almost surely, 2^25779045 is an apocalyptic number.

It is an amenable number.

25779045 is a deficient number, since it is larger than the sum of its proper divisors (15848475).

25779045 is a wasteful number, since it uses less digits than its factorization.

25779045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15884.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 25779045 is about 5077.3068648645. The cubic root of 25779045 is about 295.4080153227.

The spelling of 25779045 in words is "twenty-five million, seven hundred seventy-nine thousand, forty-five".