1255252120 has 32 divisors (see below), whose sum is σ = 2990455200. Its totient is φ = 472565248.

The previous prime is 1255252099. The next prime is 1255252127. The reversal of 1255252120 is 212525521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255252127) 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, 922300 + ... + 923659.

It is an arithmetic number, because the mean of its divisors is an integer number (93451725).

Almost surely, 2^1255252120 is an apocalyptic number.

1255252120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255252120 is an abundant number, since it is smaller than the sum of its proper divisors (1735203080).

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

1255252120 is a wasteful number, since it uses less digits than its factorization.

1255252120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845987 (or 1845983 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1255252120 is about 35429.5373946655. The cubic root of 1255252120 is about 1078.7239501530.

Adding to 1255252120 its reverse (212525521), we get a palindrome (1467777641).

The spelling of 1255252120 in words is "one billion, two hundred fifty-five million, two hundred fifty-two thousand, one hundred twenty".