23161425 has 48 divisors (see below), whose sum is σ = 44199552. Its totient is φ = 10483200.

The previous prime is 23161417. The next prime is 23161427. The reversal of 23161425 is 52416132.

It is not a de Polignac number, because 23161425 - 2³ = 23161417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23161395 and 23161404.

It is not an unprimeable number, because it can be changed into a prime (23161427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82285 + ... + 82565.

It is an arithmetic number, because the mean of its divisors is an integer number (920824).

Almost surely, 2^23161425 is an apocalyptic number.

23161425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23161425 is a deficient number, since it is larger than the sum of its proper divisors (21038127).

23161425 is a wasteful number, since it uses less digits than its factorization.

23161425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 453 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 23161425 is about 4812.6318163766. The cubic root of 23161425 is about 285.0504681324.

Adding to 23161425 its reverse (52416132), we get a palindrome (75577557).

It can be divided in two parts, 2316 and 1425, that added together give a triangular number (3741 = T₈₆).

The spelling of 23161425 in words is "twenty-three million, one hundred sixty-one thousand, four hundred twenty-five".