25051951 has 4 divisors (see below), whose sum is σ = 25062552. Its totient is φ = 25041352.

The previous prime is 25051919. The next prime is 25051981. The reversal of 25051951 is 15915052.

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 25051951 - 2⁵ = 25051919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25051981) 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, 36 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (6265638).

Almost surely, 2^25051951 is an apocalyptic number.

25051951 is a deficient number, since it is larger than the sum of its proper divisors (10601).

25051951 is an equidigital number, since it uses as much as digits as its factorization.

25051951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 25051951 is about 5005.1924038942. The cubic root of 25051951 is about 292.6041745477.

The spelling of 25051951 in words is "twenty-five million, fifty-one thousand, nine hundred fifty-one".