1257936452 has 6 divisors (see below), whose sum is σ = 2201388798. Its totient is φ = 628968224.

The previous prime is 1257936443. The next prime is 1257936461. The reversal of 1257936452 is 2546397521.

It is an interprime number because it is at equal distance from previous prime (1257936443) and next prime (1257936461).

It can be written as a sum of positive squares in only one way, i.e., 879478336 + 378458116 = 29656^2 + 19454^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157242053 + ... + 157242060.

It is an arithmetic number, because the mean of its divisors is an integer number (366898133).

Almost surely, 2^1257936452 is an apocalyptic number.

It is an amenable number.

1257936452 is a deficient number, since it is larger than the sum of its proper divisors (943452346).

1257936452 is a wasteful number, since it uses less digits than its factorization.

1257936452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314484117 (or 314484115 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The square root of 1257936452 is about 35467.3998483114. The cubic root of 1257936452 is about 1079.4923460054.

The spelling of 1257936452 in words is "one billion, two hundred fifty-seven million, nine hundred thirty-six thousand, four hundred fifty-two".