1255378152 has 32 divisors (see below), whose sum is σ = 3586795200. Its totient is φ = 358679424.

The previous prime is 1255378151. The next prime is 1255378169. The reversal of 1255378152 is 2518735521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255378152.

It is not an unprimeable number, because it can be changed into a prime (1255378151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3736077 + ... + 3736412.

It is an arithmetic number, because the mean of its divisors is an integer number (112087350).

Almost surely, 2^1255378152 is an apocalyptic number.

1255378152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1255378152 is an abundant number, since it is smaller than the sum of its proper divisors (2331417048).

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

1255378152 is a wasteful number, since it uses less digits than its factorization.

1255378152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472505 (or 7472501 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 1255378152 is about 35431.3159789472. The cubic root of 1255378152 is about 1078.7600515823.

The spelling of 1255378152 in words is "one billion, two hundred fifty-five million, three hundred seventy-eight thousand, one hundred fifty-two".