23403553211525 has 12 divisors (see below), whose sum is σ = 29020467050400. Its totient is φ = 18722803170480.

The previous prime is 23403553211503. The next prime is 23403553211531. The reversal of 23403553211525 is 52511235530432.

It is not a de Polignac number, because 23403553211525 - 2⁶ = 23403553211461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19428266 + ... + 20597684.

It is an arithmetic number, because the mean of its divisors is an integer number (2418372254200).

Almost surely, 2^{23403553211525} is an apocalyptic number.

23403553211525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23403553211525 is a deficient number, since it is larger than the sum of its proper divisors (5616913838875).

23403553211525 is a wasteful number, since it uses less digits than its factorization.

23403553211525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969948 (or 1969943 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 41.

Adding to 23403553211525 its reverse (52511235530432), we get a palindrome (75914788741957).

The spelling of 23403553211525 in words is "twenty-three trillion, four hundred three billion, five hundred fifty-three million, two hundred eleven thousand, five hundred twenty-five".