1255567261507 has 8 divisors (see below), whose sum is σ = 1388693936336. Its totient is φ = 1127661240672.

The previous prime is 1255567261499. The next prime is 1255567261511. The reversal of 1255567261507 is 7051627655521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255567261507 - 2³ = 1255567261499 is a prime.

It is a super-2 number, since 2×1255567261507² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255567261567) 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, 1305162993 + ... + 1305163954.

It is an arithmetic number, because the mean of its divisors is an integer number (173586742042).

Almost surely, 2^{1255567261507} is an apocalyptic number.

1255567261507 is a deficient number, since it is larger than the sum of its proper divisors (133126674829).

1255567261507 is a wasteful number, since it uses less digits than its factorization.

1255567261507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610326997.

The product of its (nonzero) digits is 4410000, while the sum is 52.

The spelling of 1255567261507 in words is "one trillion, two hundred fifty-five billion, five hundred sixty-seven million, two hundred sixty-one thousand, five hundred seven".