25454639063 has 16 divisors (see below), whose sum is σ = 29298630144. Its totient is φ = 21662765280.

The previous prime is 25454639047. The next prime is 25454639071. The reversal of 25454639063 is 36093645452.

It is a cyclic number.

It is not a de Polignac number, because 25454639063 - 2⁴ = 25454639047 is a prime.

It is a super-3 number, since 3×25454639063³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25454638999 and 25454639017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25454639863) 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, 1560158 + ... + 1576388.

It is an arithmetic number, because the mean of its divisors is an integer number (1831164384).

Almost surely, 2^25454639063 is an apocalyptic number.

25454639063 is a deficient number, since it is larger than the sum of its proper divisors (3843991081).

25454639063 is a wasteful number, since it uses less digits than its factorization.

25454639063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17822.

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 25454639063 in words is "twenty-five billion, four hundred fifty-four million, six hundred thirty-nine thousand, sixty-three".