1255400547 has 16 divisors (see below), whose sum is σ = 1865612160. Its totient is φ = 746243712.

The previous prime is 1255400533. The next prime is 1255400579. The reversal of 1255400547 is 7450045521.

1255400547 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1255400547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255400527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646813 + ... + 648750.

It is an arithmetic number, because the mean of its divisors is an integer number (116600760).

Almost surely, 2^1255400547 is an apocalyptic number.

1255400547 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1255400547 is a deficient number, since it is larger than the sum of its proper divisors (610211613).

1255400547 is a wasteful number, since it uses less digits than its factorization.

1255400547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295602.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 1255400547 is about 35431.6320115233. The cubic root of 1255400547 is about 1078.7664662996.

The spelling of 1255400547 in words is "one billion, two hundred fifty-five million, four hundred thousand, five hundred forty-seven".