25421955675 has 24 divisors (see below), whose sum is σ = 42044622960. Its totient is φ = 13553971200.

The previous prime is 25421955641. The next prime is 25421955743. The reversal of 25421955675 is 57655912452.

It is a happy number.

It is not a de Polignac number, because 25421955675 - 2¹⁰ = 25421954651 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184195 + ... + 291155.

It is an arithmetic number, because the mean of its divisors is an integer number (1751859290).

Almost surely, 2^25421955675 is an apocalyptic number.

25421955675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25421955675 is a deficient number, since it is larger than the sum of its proper divisors (16622667285).

25421955675 is a wasteful number, since it uses less digits than its factorization.

25421955675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110143 (or 110138 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 51.

The spelling of 25421955675 in words is "twenty-five billion, four hundred twenty-one million, nine hundred fifty-five thousand, six hundred seventy-five".