1055125553421 has 16 divisors (see below), whose sum is σ = 1409659704000. Its totient is φ = 702004841088.

The previous prime is 1055125553411. The next prime is 1055125553429. The reversal of 1055125553421 is 1243555215501.

It is not a de Polignac number, because 1055125553421 - 2¹⁸ = 1055125291277 is a prime.

It is a super-2 number, since 2×1055125553421² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055125553421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055125553429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6921595 + ... + 7072391.

It is an arithmetic number, because the mean of its divisors is an integer number (88103731500).

Almost surely, 2^{1055125553421} is an apocalyptic number.

It is an amenable number.

1055125553421 is a deficient number, since it is larger than the sum of its proper divisors (354534150579).

1055125553421 is a wasteful number, since it uses less digits than its factorization.

1055125553421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155468.

The product of its (nonzero) digits is 150000, while the sum is 39.

The spelling of 1055125553421 in words is "one trillion, fifty-five billion, one hundred twenty-five million, five hundred fifty-three thousand, four hundred twenty-one".