23478378125 has 18 divisors (see below), whose sum is σ = 29356804638. Its totient is φ = 18775850000.

The previous prime is 23478378031. The next prime is 23478378137. The reversal of 23478378125 is 52187387432.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 22788317764 + 690060361 = 150958^2 + 26269^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23478378125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8564255 + ... + 8566995.

It is an arithmetic number, because the mean of its divisors is an integer number (1630933591).

Almost surely, 2^23478378125 is an apocalyptic number.

23478378125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23478378125 is a deficient number, since it is larger than the sum of its proper divisors (5878426513).

23478378125 is an frugal number, since it uses more digits than its factorization.

23478378125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507 (or 2746 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 50.

The spelling of 23478378125 in words is "twenty-three billion, four hundred seventy-eight million, three hundred seventy-eight thousand, one hundred twenty-five".