1005125262061 has 4 divisors (see below), whose sum is σ = 1020127131712. Its totient is φ = 990123392412.

The previous prime is 1005125262059. The next prime is 1005125262067. The reversal of 1005125262061 is 1602625215001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1005125262061 - 2¹ = 1005125262059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005125262067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7500934725 + ... + 7500934858.

It is an arithmetic number, because the mean of its divisors is an integer number (255031782928).

Almost surely, 2^{1005125262061} is an apocalyptic number.

It is an amenable number.

1005125262061 is a deficient number, since it is larger than the sum of its proper divisors (15001869651).

1005125262061 is an equidigital number, since it uses as much as digits as its factorization.

1005125262061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001869650.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 1005125262061 in words is "one trillion, five billion, one hundred twenty-five million, two hundred sixty-two thousand, sixty-one".