2504421251523 has 80 divisors (see below), whose sum is σ = 4147707928320. Its totient is φ = 1498826286144.

The previous prime is 2504421251509. The next prime is 2504421251543. The reversal of 2504421251523 is 3251521244052.

2504421251523 is a `hidden beast` number, since 2 + 5 + 0 + 4 + 4 + 2 + 125 + 1 + 523 = 666.

It is not a de Polignac number, because 2504421251523 - 2⁴¹ = 305397995971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2504421251543) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3456861 + ... + 4118097.

It is an arithmetic number, because the mean of its divisors is an integer number (51846349104).

Almost surely, 2^{2504421251523} is an apocalyptic number.

2504421251523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2504421251523 is a deficient number, since it is larger than the sum of its proper divisors (1643286676797).

2504421251523 is a wasteful number, since it uses less digits than its factorization.

2504421251523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661398 (or 661389 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 2504421251523 its reverse (3251521244052), we get a palindrome (5755942495575).

The spelling of 2504421251523 in words is "two trillion, five hundred four billion, four hundred twenty-one million, two hundred fifty-one thousand, five hundred twenty-three".