23571025 has 9 divisors (see below), whose sum is σ = 29258203. Its totient is φ = 18837400.

The previous prime is 23571019. The next prime is 23571029. The reversal of 23571025 is 52017532.

The square root of 23571025 is 4855.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8485569 + 15085456 = 2913^2 + 3884^2 .

It is not a de Polignac number, because 23571025 - 2¹¹ = 23568977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23571029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23790 + ... + 24760.

Almost surely, 2^23571025 is an apocalyptic number.

23571025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23571025 is the 4855-th square number.

23571025 is the 2428-th centered octagonal number.

It is an amenable number.

23571025 is a deficient number, since it is larger than the sum of its proper divisors (5687178).

23571025 is an frugal number, since it uses more digits than its factorization.

23571025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The cubic root of 23571025 is about 286.7209912970.

Multiplying 23571025 by its sum of digits (25), we get a square (589275625 = 24275²).

23571025 divided by its sum of digits (25) gives a square (942841 = 971²).

Adding to 23571025 its reverse (52017532), we get a palindrome (75588557).

The spelling of 23571025 in words is "twenty-three million, five hundred seventy-one thousand, twenty-five".