1255451321534 has 4 divisors (see below), whose sum is σ = 1883176982304. Its totient is φ = 627725660766.

The previous prime is 1255451321519. The next prime is 1255451321543. The reversal of 1255451321534 is 4351231545521.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1255451321534² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255451321491 and 1255451321500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313862830382 + ... + 313862830385.

It is an arithmetic number, because the mean of its divisors is an integer number (470794245576).

Almost surely, 2^{1255451321534} is an apocalyptic number.

1255451321534 is a deficient number, since it is larger than the sum of its proper divisors (627725660770).

1255451321534 is an equidigital number, since it uses as much as digits as its factorization.

1255451321534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627725660769.

The product of its digits is 360000, while the sum is 41.

The spelling of 1255451321534 in words is "one trillion, two hundred fifty-five billion, four hundred fifty-one million, three hundred twenty-one thousand, five hundred thirty-four".