25109983 has 4 divisors (see below), whose sum is σ = 25120368. Its totient is φ = 25099600.

The previous prime is 25109971. The next prime is 25109993. The reversal of 25109983 is 38990152.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25109983 - 2⁹ = 25109471 is a prime.

It is a super-2 number, since 2×25109983² = 1261022492520578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25109923) 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, 558 + ... + 7108.

It is an arithmetic number, because the mean of its divisors is an integer number (6280092).

Almost surely, 2^25109983 is an apocalyptic number.

25109983 is a deficient number, since it is larger than the sum of its proper divisors (10385).

25109983 is an equidigital number, since it uses as much as digits as its factorization.

25109983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 25109983 is about 5010.9862302744. The cubic root of 25109983 is about 292.8299362165.

The spelling of 25109983 in words is "twenty-five million, one hundred nine thousand, nine hundred eighty-three".