47904625257 has 4 divisors (see below), whose sum is σ = 63872833680. Its totient is φ = 31936416836.

The previous prime is 47904625253. The next prime is 47904625267. The reversal of 47904625257 is 75252640974.

47904625257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47904625257 - 2² = 47904625253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47904625253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7984104207 + ... + 7984104212.

It is an arithmetic number, because the mean of its divisors is an integer number (15968208420).

Almost surely, 2^47904625257 is an apocalyptic number.

It is an amenable number.

47904625257 is a deficient number, since it is larger than the sum of its proper divisors (15968208423).

47904625257 is a wasteful number, since it uses less digits than its factorization.

47904625257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15968208422.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 47904625257 in words is "forty-seven billion, nine hundred four million, six hundred twenty-five thousand, two hundred fifty-seven".