1051520125603 has 4 divisors (see below), whose sum is σ = 1051522986168. Its totient is φ = 1051517265040.

The previous prime is 1051520125589. The next prime is 1051520125627. The reversal of 1051520125603 is 3065210251501.

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

It is a cyclic number.

It is not a de Polignac number, because 1051520125603 - 2³³ = 1042930191011 is a prime.

It is a super-2 number, since 2×1051520125603² (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 (1051520125693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780493 + ... + 1646878.

It is an arithmetic number, because the mean of its divisors is an integer number (262880746542).

Almost surely, 2^{1051520125603} is an apocalyptic number.

1051520125603 is a deficient number, since it is larger than the sum of its proper divisors (2860565).

1051520125603 is an equidigital number, since it uses as much as digits as its factorization.

1051520125603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860564.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 1051520125603 in words is "one trillion, fifty-one billion, five hundred twenty million, one hundred twenty-five thousand, six hundred three".