1255540152 has 64 divisors (see below), whose sum is σ = 3260476800. Its totient is φ = 402416000.

The previous prime is 1255540141. The next prime is 1255540183. The reversal of 1255540152 is 2510455521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171103 + ... + 178289.

It is an arithmetic number, because the mean of its divisors is an integer number (50944950).

Almost surely, 2^1255540152 is an apocalyptic number.

1255540152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255540152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630238400).

1255540152 is an abundant number, since it is smaller than the sum of its proper divisors (2004936648).

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

1255540152 is a wasteful number, since it uses less digits than its factorization.

1255540152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476 (or 7472 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1255540152 is about 35433.6020184231. The cubic root of 1255540152 is about 1078.8064523717.

Adding to 1255540152 its reverse (2510455521), we get a palindrome (3765995673).

The spelling of 1255540152 in words is "one billion, two hundred fifty-five million, five hundred forty thousand, one hundred fifty-two".