1257105004 has 6 divisors (see below), whose sum is σ = 2199933764. Its totient is φ = 628552500.

The previous prime is 1257104971. The next prime is 1257105011. The reversal of 1257105004 is 4005017521.

It is a self number, because there is not a number n which added to its sum of digits gives 1257105004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157138122 + ... + 157138129.

Almost surely, 2^1257105004 is an apocalyptic number.

It is an amenable number.

1257105004 is a deficient number, since it is larger than the sum of its proper divisors (942828760).

1257105004 is a wasteful number, since it uses less digits than its factorization.

1257105004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314276255 (or 314276253 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 1257105004 is about 35455.6766117924. The cubic root of 1257105004 is about 1079.2544591682.

The spelling of 1257105004 in words is "one billion, two hundred fifty-seven million, one hundred five thousand, four".