25289951 has 4 divisors (see below), whose sum is σ = 25317072. Its totient is φ = 25262832.

The previous prime is 25289947. The next prime is 25289959. The reversal of 25289951 is 15998252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25289951 - 2² = 25289947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25289899 and 25289908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25289959) 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, 12110 + ... + 14043.

It is an arithmetic number, because the mean of its divisors is an integer number (6329268).

Almost surely, 2^25289951 is an apocalyptic number.

25289951 is a deficient number, since it is larger than the sum of its proper divisors (27121).

25289951 is an equidigital number, since it uses as much as digits as its factorization.

25289951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27120.

The product of its digits is 64800, while the sum is 41.

The square root of 25289951 is about 5028.9115124448. The cubic root of 25289951 is about 293.5278606666.

The spelling of 25289951 in words is "twenty-five million, two hundred eighty-nine thousand, nine hundred fifty-one".