23825657 has 4 divisors (see below), whose sum is σ = 23949300. Its totient is φ = 23702016.

The previous prime is 23825621. The next prime is 23825713. The reversal of 23825657 is 75652832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10106041 + 13719616 = 3179^2 + 3704^2 .

It is a cyclic number.

It is not a de Polignac number, because 23825657 - 2¹² = 23821561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23825657.

It is not an unprimeable number, because it can be changed into a prime (23824657) 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, 61532 + ... + 61917.

It is an arithmetic number, because the mean of its divisors is an integer number (5987325).

Almost surely, 2^23825657 is an apocalyptic number.

It is an amenable number.

23825657 is a deficient number, since it is larger than the sum of its proper divisors (123643).

23825657 is a wasteful number, since it uses less digits than its factorization.

23825657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123642.

The product of its digits is 100800, while the sum is 38.

The square root of 23825657 is about 4881.1532448797. The cubic root of 23825657 is about 287.7497544912.

The spelling of 23825657 in words is "twenty-three million, eight hundred twenty-five thousand, six hundred fifty-seven".