1520025056791 has 2 divisors, whose sum is σ = 1520025056792. Its totient is φ = 1520025056790.

The previous prime is 1520025056789. The next prime is 1520025056821. The reversal of 1520025056791 is 1976505200251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1520025056791 - 2¹ = 1520025056789 is a prime.

Together with 1520025056789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520025026791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760012528395 + 760012528396.

It is an arithmetic number, because the mean of its divisors is an integer number (760012528396).

Almost surely, 2^{1520025056791} is an apocalyptic number.

1520025056791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520025056791 is an equidigital number, since it uses as much as digits as its factorization.

1520025056791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 1520025056791 in words is "one trillion, five hundred twenty billion, twenty-five million, fifty-six thousand, seven hundred ninety-one".