23625345661 has 4 divisors (see below), whose sum is σ = 23846143392. Its totient is φ = 23404547932.

The previous prime is 23625345659. The next prime is 23625345671. The reversal of 23625345661 is 16654352632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23625345661 - 2¹ = 23625345659 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 (23625345671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110398705 + ... + 110398918.

It is an arithmetic number, because the mean of its divisors is an integer number (5961535848).

Almost surely, 2^23625345661 is an apocalyptic number.

It is an amenable number.

23625345661 is a deficient number, since it is larger than the sum of its proper divisors (220797731).

23625345661 is a wasteful number, since it uses less digits than its factorization.

23625345661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220797730.

The product of its digits is 777600, while the sum is 43.

The spelling of 23625345661 in words is "twenty-three billion, six hundred twenty-five million, three hundred forty-five thousand, six hundred sixty-one".