2125407495991 has 8 divisors (see below), whose sum is σ = 2303479365824. Its totient is φ = 1949418338400.

The previous prime is 2125407495977. The next prime is 2125407496013. The reversal of 2125407495991 is 1995947045212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2125407495991 - 2¹³ = 2125407487799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125407495931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520675935 + ... + 520680016.

It is an arithmetic number, because the mean of its divisors is an integer number (287934920728).

Almost surely, 2^{2125407495991} is an apocalyptic number.

2125407495991 is a deficient number, since it is larger than the sum of its proper divisors (178071869833).

2125407495991 is a wasteful number, since it uses less digits than its factorization.

2125407495991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041356121.

The product of its (nonzero) digits is 8164800, while the sum is 58.

The spelling of 2125407495991 in words is "two trillion, one hundred twenty-five billion, four hundred seven million, four hundred ninety-five thousand, nine hundred ninety-one".