1255107915 has 12 divisors (see below), whose sum is σ = 2175520464. Its totient is φ = 669390864.

The previous prime is 1255107913. The next prime is 1255107983. The reversal of 1255107915 is 5197015521.

1255107915 is a `hidden beast` number, since 12 + 551 + 0 + 7 + 91 + 5 = 666.

It is not a de Polignac number, because 1255107915 - 2¹ = 1255107913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255107915.

It is not an unprimeable number, because it can be changed into a prime (1255107913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13945599 + ... + 13945688.

It is an arithmetic number, because the mean of its divisors is an integer number (181293372).

Almost surely, 2^1255107915 is an apocalyptic number.

1255107915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255107915 is a deficient number, since it is larger than the sum of its proper divisors (920412549).

1255107915 is a wasteful number, since it uses less digits than its factorization.

1255107915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27891298 (or 27891295 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 36.

The square root of 1255107915 is about 35427.5022404911. The cubic root of 1255107915 is about 1078.6826401665.

The spelling of 1255107915 in words is "one billion, two hundred fifty-five million, one hundred seven thousand, nine hundred fifteen".