671267755425 has 12 divisors (see below), whose sum is σ = 1109829355760. Its totient is φ = 358009469520.

The previous prime is 671267755421. The next prime is 671267755451. The reversal of 671267755425 is 524557762176.

It is a happy number.

It is not a de Polignac number, because 671267755425 - 2² = 671267755421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671267755421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4475118295 + ... + 4475118444.

Almost surely, 2^671267755425 is an apocalyptic number.

It is an amenable number.

671267755425 is a deficient number, since it is larger than the sum of its proper divisors (438561600335).

671267755425 is a wasteful number, since it uses less digits than its factorization.

671267755425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8950236752 (or 8950236747 counting only the distinct ones).

The product of its digits is 24696000, while the sum is 57.

The spelling of 671267755425 in words is "six hundred seventy-one billion, two hundred sixty-seven million, seven hundred fifty-five thousand, four hundred twenty-five".