25772647563 has 24 divisors (see below), whose sum is σ = 40209810368. Its totient is φ = 15813004032.

The previous prime is 25772647553. The next prime is 25772647633. The reversal of 25772647563 is 36574627752.

It is a happy number.

25772647563 is a `hidden beast` number, since 2 + 5 + 7 + 72 + 6 + 4 + 7 + 563 = 666.

It is not a de Polignac number, because 25772647563 - 2⁶ = 25772647499 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25772647553) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 287395 + ... + 366252.

Almost surely, 2^25772647563 is an apocalyptic number.

25772647563 is a deficient number, since it is larger than the sum of its proper divisors (14437162805).

25772647563 is a wasteful number, since it uses less digits than its factorization.

25772647563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654003 (or 654000 counting only the distinct ones).

The product of its digits is 14817600, while the sum is 54.

The spelling of 25772647563 in words is "twenty-five billion, seven hundred seventy-two million, six hundred forty-seven thousand, five hundred sixty-three".