25978153 has 2 divisors, whose sum is σ = 25978154. Its totient is φ = 25978152.

The previous prime is 25978129. The next prime is 25978157. The reversal of 25978153 is 35187952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22581504 + 3396649 = 4752^2 + 1843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25978153 is a prime.

It is not a weakly prime, because it can be changed into another prime (25978157) 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 as a sum of consecutive naturals, namely, 12989076 + 12989077.

It is an arithmetic number, because the mean of its divisors is an integer number (12989077).

Almost surely, 2^25978153 is an apocalyptic number.

It is an amenable number.

25978153 is a deficient number, since it is larger than the sum of its proper divisors (1).

25978153 is an equidigital number, since it uses as much as digits as its factorization.

25978153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 25978153 is about 5096.8767887796. The cubic root of 25978153 is about 296.1666071126.

The spelling of 25978153 in words is "twenty-five million, nine hundred seventy-eight thousand, one hundred fifty-three".