1255374647 has 2 divisors, whose sum is σ = 1255374648. Its totient is φ = 1255374646.

The previous prime is 1255374641. The next prime is 1255374671. The reversal of 1255374647 is 7464735521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1255374647 - 2²⁴ = 1238597431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255374598 and 1255374607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255374641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627687323 + 627687324.

It is an arithmetic number, because the mean of its divisors is an integer number (627687324).

Almost surely, 2^1255374647 is an apocalyptic number.

1255374647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255374647 is an equidigital number, since it uses as much as digits as its factorization.

1255374647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 44.

The square root of 1255374647 is about 35431.2665170186. The cubic root of 1255374647 is about 1078.7590476199.

The spelling of 1255374647 in words is "one billion, two hundred fifty-five million, three hundred seventy-four thousand, six hundred forty-seven".