120025551391 has 2 divisors, whose sum is σ = 120025551392. Its totient is φ = 120025551390.

The previous prime is 120025551343. The next prime is 120025551403. The reversal of 120025551391 is 193155520021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120025551391 - 2¹³ = 120025543199 is a prime.

It is a super-2 number, since 2×120025551391² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120025551341) 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 as a sum of consecutive naturals, namely, 60012775695 + 60012775696.

It is an arithmetic number, because the mean of its divisors is an integer number (60012775696).

Almost surely, 2^120025551391 is an apocalyptic number.

120025551391 is a deficient number, since it is larger than the sum of its proper divisors (1).

120025551391 is an equidigital number, since it uses as much as digits as its factorization.

120025551391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 120025551391 in words is "one hundred twenty billion, twenty-five million, five hundred fifty-one thousand, three hundred ninety-one".