25127657563 has 16 divisors (see below), whose sum is σ = 25484461056. Its totient is φ = 24773647360.

The previous prime is 25127657561. The next prime is 25127657587. The reversal of 25127657563 is 36575672152.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25127657563 - 2¹ = 25127657561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25127657561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26702673 + ... + 26703613.

It is an arithmetic number, because the mean of its divisors is an integer number (1592778816).

Almost surely, 2^25127657563 is an apocalyptic number.

25127657563 is a deficient number, since it is larger than the sum of its proper divisors (356803493).

25127657563 is a wasteful number, since it uses less digits than its factorization.

25127657563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054.

The product of its digits is 2646000, while the sum is 49.

The spelling of 25127657563 in words is "twenty-five billion, one hundred twenty-seven million, six hundred fifty-seven thousand, five hundred sixty-three".