1257865468 has 24 divisors (see below), whose sum is σ = 2272172000. Its totient is φ = 608845248.

The previous prime is 1257865463. The next prime is 1257865481. The reversal of 1257865468 is 8645687521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257865463) 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, 8098 + ... + 50806.

Almost surely, 2^1257865468 is an apocalyptic number.

It is an amenable number.

1257865468 is a deficient number, since it is larger than the sum of its proper divisors (1014306532).

1257865468 is a wasteful number, since it uses less digits than its factorization.

1257865468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42949 (or 42947 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 52.

The square root of 1257865468 is about 35466.3991405950. The cubic root of 1257865468 is about 1079.4720407597.

The spelling of 1257865468 in words is "one billion, two hundred fifty-seven million, eight hundred sixty-five thousand, four hundred sixty-eight".