1276025457 has 48 divisors (see below), whose sum is σ = 2079544320. Its totient is φ = 681614592.

The previous prime is 1276025449. The next prime is 1276025461. The reversal of 1276025457 is 7545206721.

It is not a de Polignac number, because 1276025457 - 2³ = 1276025449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276025417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1012894 + ... + 1014152.

It is an arithmetic number, because the mean of its divisors is an integer number (43323840).

Almost surely, 2^1276025457 is an apocalyptic number.

1276025457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1276025457 is a deficient number, since it is larger than the sum of its proper divisors (803518863).

1276025457 is a wasteful number, since it uses less digits than its factorization.

1276025457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 1276025457 is about 35721.4985267976. The cubic root of 1276025457 is about 1084.6420721159.

The spelling of 1276025457 in words is "one billion, two hundred seventy-six million, twenty-five thousand, four hundred fifty-seven".