1255479480 has 64 divisors (see below), whose sum is σ = 4184935200. Its totient is φ = 334794240.

The previous prime is 1255479443. The next prime is 1255479487. The reversal of 1255479480 is 849745521.

1255479480 is a `hidden beast` number, since 1 + 2 + 554 + 7 + 94 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255479487) 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, 580161 + ... + 582320.

Almost surely, 2^1255479480 is an apocalyptic number.

1255479480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255479480 is an abundant number, since it is smaller than the sum of its proper divisors (2929455720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255479480 is a wasteful number, since it uses less digits than its factorization.

1255479480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162501 (or 1162491 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 1255479480 is about 35432.7458715804. The cubic root of 1255479480 is about 1078.7890748843.

The spelling of 1255479480 in words is "one billion, two hundred fifty-five million, four hundred seventy-nine thousand, four hundred eighty".