25214251 has 4 divisors (see below), whose sum is σ = 25245712. Its totient is φ = 25182792.

The previous prime is 25214249. The next prime is 25214263. The reversal of 25214251 is 15241252.

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 25214251 - 2¹ = 25214249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25214201) 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, 14496 + ... + 16141.

It is an arithmetic number, because the mean of its divisors is an integer number (6311428).

Almost surely, 2^25214251 is an apocalyptic number.

25214251 is a deficient number, since it is larger than the sum of its proper divisors (31461).

25214251 is an equidigital number, since it uses as much as digits as its factorization.

25214251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31460.

The product of its digits is 800, while the sum is 22.

The square root of 25214251 is about 5021.3793921591. The cubic root of 25214251 is about 293.2346972370.

The spelling of 25214251 in words is "twenty-five million, two hundred fourteen thousand, two hundred fifty-one".