1278025054 has 4 divisors (see below), whose sum is σ = 1917037584. Its totient is φ = 639012526.

The previous prime is 1278025051. The next prime is 1278025057. The reversal of 1278025054 is 4505208721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1278025051) and next prime (1278025057).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278025051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319506262 + ... + 319506265.

It is an arithmetic number, because the mean of its divisors is an integer number (479259396).

Almost surely, 2^1278025054 is an apocalyptic number.

1278025054 is a deficient number, since it is larger than the sum of its proper divisors (639012530).

1278025054 is an equidigital number, since it uses as much as digits as its factorization.

1278025054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639012529.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 1278025054 is about 35749.4762758841. The cubic root of 1278025054 is about 1085.2083395857.

The spelling of 1278025054 in words is "one billion, two hundred seventy-eight million, twenty-five thousand, fifty-four".