23403681425 has 12 divisors (see below), whose sum is σ = 29277387660. Its totient is φ = 18557253120.

The previous prime is 23403681419. The next prime is 23403681461. The reversal of 23403681425 is 52418630432.

It can be written as a sum of positive squares in 6 ways, for example, as 12043745536 + 11359935889 = 109744^2 + 106583^2 .

It is not a de Polignac number, because 23403681425 - 2²⁰ = 23402632849 is a prime.

It is a Curzon 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, 4139420 + ... + 4145069.

It is an arithmetic number, because the mean of its divisors is an integer number (2439782305).

Almost surely, 2^23403681425 is an apocalyptic number.

23403681425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23403681425 is a deficient number, since it is larger than the sum of its proper divisors (5873706235).

23403681425 is a wasteful number, since it uses less digits than its factorization.

23403681425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284612 (or 8284607 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 23403681425 in words is "twenty-three billion, four hundred three million, six hundred eighty-one thousand, four hundred twenty-five".