25476321971 has 4 divisors (see below), whose sum is σ = 25476641232. Its totient is φ = 25476002712.

The previous prime is 25476321961. The next prime is 25476321977. The reversal of 25476321971 is 17912367452.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25476321971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25476321977) 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 3 ways as a sum of consecutive naturals, for example, 76325 + ... + 238281.

It is an arithmetic number, because the mean of its divisors is an integer number (6369160308).

Almost surely, 2^25476321971 is an apocalyptic number.

25476321971 is a deficient number, since it is larger than the sum of its proper divisors (319261).

25476321971 is a wasteful number, since it uses less digits than its factorization.

25476321971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319260.

The product of its digits is 635040, while the sum is 47.

The spelling of 25476321971 in words is "twenty-five billion, four hundred seventy-six million, three hundred twenty-one thousand, nine hundred seventy-one".