25081578963 has 40 divisors (see below), whose sum is σ = 43261588832. Its totient is φ = 14184543744.

The previous prime is 25081578941. The next prime is 25081579001. The reversal of 25081578963 is 36987518052.

25081578963 is a `hidden beast` number, since 2 + 5 + 0 + 8 + 1 + 578 + 9 + 63 = 666.

It is not a de Polignac number, because 25081578963 - 2¹⁶ = 25081513427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25081578923) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 173020 + ... + 283017.

Almost surely, 2^25081578963 is an apocalyptic number.

25081578963 is a deficient number, since it is larger than the sum of its proper divisors (18180009869).

25081578963 is an equidigital number, since it uses as much as digits as its factorization.

25081578963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456153 (or 456144 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 25081578963 in words is "twenty-five billion, eighty-one million, five hundred seventy-eight thousand, nine hundred sixty-three".