23540381725 has 24 divisors (see below), whose sum is σ = 33367203648. Its totient is φ = 16138531200.

The previous prime is 23540381723. The next prime is 23540381747. The reversal of 23540381725 is 52718304532.

It is not a de Polignac number, because 23540381725 - 2¹ = 23540381723 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 (23540381723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1020570 + ... + 1043380.

It is an arithmetic number, because the mean of its divisors is an integer number (1390300152).

Almost surely, 2^23540381725 is an apocalyptic number.

23540381725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23540381725 is a deficient number, since it is larger than the sum of its proper divisors (9826821923).

23540381725 is a wasteful number, since it uses less digits than its factorization.

23540381725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28725 (or 28720 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 23540381725 in words is "twenty-three billion, five hundred forty million, three hundred eighty-one thousand, seven hundred twenty-five".