2505512661421 has 8 divisors (see below), whose sum is σ = 3123756045504. Its totient is φ = 1952347528320.

The previous prime is 2505512661349. The next prime is 2505512661437. The reversal of 2505512661421 is 1241662155052.

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

It is not a de Polignac number, because 2505512661421 - 2⁷ = 2505512661293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505512601421) 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, 16269562660 + ... + 16269562813.

It is an arithmetic number, because the mean of its divisors is an integer number (390469505688).

Almost surely, 2^{2505512661421} is an apocalyptic number.

It is an amenable number.

2505512661421 is a deficient number, since it is larger than the sum of its proper divisors (618243384083).

2505512661421 is a wasteful number, since it uses less digits than its factorization.

2505512661421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32539125491.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 2505512661421 in words is "two trillion, five hundred five billion, five hundred twelve million, six hundred sixty-one thousand, four hundred twenty-one".