1125642620587 has 12 divisors (see below), whose sum is σ = 1163526634848. Its totient is φ = 1088955414000.

The previous prime is 1125642620581. The next prime is 1125642620621. The reversal of 1125642620587 is 7850262465211.

It is not a de Polignac number, because 1125642620587 - 2³⁵ = 1091282882219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125642620587.

It is not an unprimeable number, because it can be changed into a prime (1125642620581) 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 11 ways as a sum of consecutive naturals, for example, 2602462 + ... + 3004012.

It is an arithmetic number, because the mean of its divisors is an integer number (96960552904).

Almost surely, 2^{1125642620587} is an apocalyptic number.

1125642620587 is a deficient number, since it is larger than the sum of its proper divisors (37884014261).

1125642620587 is an equidigital number, since it uses as much as digits as its factorization.

1125642620587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404530 (or 404499 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 1125642620587 in words is "one trillion, one hundred twenty-five billion, six hundred forty-two million, six hundred twenty thousand, five hundred eighty-seven".