1257468477 has 8 divisors (see below), whose sum is σ = 1682016960. Its totient is φ = 835616160.

The previous prime is 1257468473. The next prime is 1257468493. The reversal of 1257468477 is 7748647521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1257468477 - 2² = 1257468473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257468473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672952 + ... + 674817.

It is an arithmetic number, because the mean of its divisors is an integer number (210252120).

Almost surely, 2^1257468477 is an apocalyptic number.

It is an amenable number.

1257468477 is a deficient number, since it is larger than the sum of its proper divisors (424548483).

1257468477 is a wasteful number, since it uses less digits than its factorization.

1257468477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348083.

The product of its digits is 2634240, while the sum is 51.

The square root of 1257468477 is about 35460.8019790867. The cubic root of 1257468477 is about 1079.3584658751.

The spelling of 1257468477 in words is "one billion, two hundred fifty-seven million, four hundred sixty-eight thousand, four hundred seventy-seven".