25978029 has 16 divisors (see below), whose sum is σ = 43184640. Its totient is φ = 13494960.

The previous prime is 25978027. The next prime is 25978037. The reversal of 25978029 is 92087952.

It is not a de Polignac number, because 25978029 - 2¹ = 25978027 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25978021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55999 + ... + 56460.

It is an arithmetic number, because the mean of its divisors is an integer number (2699040).

Almost surely, 2^25978029 is an apocalyptic number.

It is an amenable number.

25978029 is a deficient number, since it is larger than the sum of its proper divisors (17206611).

25978029 is a wasteful number, since it uses less digits than its factorization.

25978029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112480.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 25978029 is about 5096.8646244530. The cubic root of 25978029 is about 296.1661358869.

The spelling of 25978029 in words is "twenty-five million, nine hundred seventy-eight thousand, twenty-nine".