1005125262131 has 4 divisors (see below), whose sum is σ = 1005128934264. Its totient is φ = 1005121590000.

The previous prime is 1005125262121. The next prime is 1005125262137. The reversal of 1005125262131 is 1312625215001.

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 1005125262131 - 2⁶ = 1005125262067 is a prime.

It is a super-2 number, since 2×1005125262131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005125262094 and 1005125262103.

It is not an unprimeable number, because it can be changed into a prime (1005125262137) 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, 1389245 + ... + 1985006.

It is an arithmetic number, because the mean of its divisors is an integer number (251282233566).

Almost surely, 2^{1005125262131} is an apocalyptic number.

1005125262131 is a deficient number, since it is larger than the sum of its proper divisors (3672133).

1005125262131 is an equidigital number, since it uses as much as digits as its factorization.

1005125262131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672132.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 1005125262131 in words is "one trillion, five billion, one hundred twenty-five million, two hundred sixty-two thousand, one hundred thirty-one".