1255620615075 has 48 divisors (see below), whose sum is σ = 2335098485600. Its totient is φ = 669664298880.

The previous prime is 1255620615061. The next prime is 1255620615083. The reversal of 1255620615075 is 5705160265521.

1255620615075 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 6 + 20 + 615 + 0 + 7 + 5 = 666.

It is not a de Polignac number, because 1255620615075 - 2⁴ = 1255620615059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1255620615075.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11427910 + ... + 11537259.

Almost surely, 2^{1255620615075} is an apocalyptic number.

1255620615075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255620615075 is a deficient number, since it is larger than the sum of its proper divisors (1079477870525).

1255620615075 is an frugal number, since it uses more digits than its factorization.

1255620615075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22965200 (or 22965177 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The spelling of 1255620615075 in words is "one trillion, two hundred fifty-five billion, six hundred twenty million, six hundred fifteen thousand, seventy-five".