23135425 has 12 divisors (see below), whose sum is σ = 28748160. Its totient is φ = 18469520.

The previous prime is 23135389. The next prime is 23135443. The reversal of 23135425 is 52453132.

It is not a de Polignac number, because 23135425 - 2¹⁹ = 22611137 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23135425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20424 + ... + 21526.

It is an arithmetic number, because the mean of its divisors is an integer number (2395680).

Almost surely, 2^23135425 is an apocalyptic number.

23135425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23135425 is a deficient number, since it is larger than the sum of its proper divisors (5612735).

23135425 is a wasteful number, since it uses less digits than its factorization.

23135425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1947 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 23135425 is about 4809.9298331680. The cubic root of 23135425 is about 284.9437664778.

Adding to 23135425 its reverse (52453132), we get a palindrome (75588557).

The spelling of 23135425 in words is "twenty-three million, one hundred thirty-five thousand, four hundred twenty-five".