25161923 has 8 divisors (see below), whose sum is σ = 25814448. Its totient is φ = 24512544.

The previous prime is 25161911. The next prime is 25161943. The reversal of 25161923 is 32916152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25161923 - 2⁸ = 25161667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25161943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32165 + ... + 32937.

It is an arithmetic number, because the mean of its divisors is an integer number (3226806).

Almost surely, 2^25161923 is an apocalyptic number.

25161923 is a deficient number, since it is larger than the sum of its proper divisors (652525).

25161923 is an equidigital number, since it uses as much as digits as its factorization.

25161923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its digits is 3240, while the sum is 29.

The square root of 25161923 is about 5016.1661655093. The cubic root of 25161923 is about 293.0317034036.

The spelling of 25161923 in words is "twenty-five million, one hundred sixty-one thousand, nine hundred twenty-three".