1255520154 has 32 divisors (see below), whose sum is σ = 2873566080. Its totient is φ = 358244352.

The previous prime is 1255520137. The next prime is 1255520207. The reversal of 1255520154 is 4510255521.

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, 12862 + ... + 51734.

It is an arithmetic number, because the mean of its divisors is an integer number (89798940).

Almost surely, 2^1255520154 is an apocalyptic number.

1255520154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1255520154 is an abundant number, since it is smaller than the sum of its proper divisors (1618045926).

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

1255520154 is a wasteful number, since it uses less digits than its factorization.

1255520154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39654.

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

The square root of 1255520154 is about 35433.3198275296. The cubic root of 1255520154 is about 1078.8007246680.

Adding to 1255520154 its reverse (4510255521), we get a palindrome (5765775675).

The spelling of 1255520154 in words is "one billion, two hundred fifty-five million, five hundred twenty thousand, one hundred fifty-four".