25670362447 has 4 divisors (see below), whose sum is σ = 25671545536. Its totient is φ = 25669179360.

The previous prime is 25670362429. The next prime is 25670362469. The reversal of 25670362447 is 74426307652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25670362447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25670362397 and 25670362406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25670362427) 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, 558378 + ... + 602599.

It is an arithmetic number, because the mean of its divisors is an integer number (6417886384).

Almost surely, 2^25670362447 is an apocalyptic number.

25670362447 is a deficient number, since it is larger than the sum of its proper divisors (1183089).

25670362447 is a wasteful number, since it uses less digits than its factorization.

25670362447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183088.

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 25670362447 in words is "twenty-five billion, six hundred seventy million, three hundred sixty-two thousand, four hundred forty-seven".