25214457 has 4 divisors (see below), whose sum is σ = 33619280. Its totient is φ = 16809636.

The previous prime is 25214447. The next prime is 25214473. The reversal of 25214457 is 75441252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25214457 - 2⁶ = 25214393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25214447) 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, 4202407 + ... + 4202412.

It is an arithmetic number, because the mean of its divisors is an integer number (8404820).

Almost surely, 2^25214457 is an apocalyptic number.

It is an amenable number.

25214457 is a deficient number, since it is larger than the sum of its proper divisors (8404823).

25214457 is an equidigital number, since it uses as much as digits as its factorization.

25214457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404822.

The product of its digits is 11200, while the sum is 30.

The square root of 25214457 is about 5021.3999044091. The cubic root of 25214457 is about 293.2354958090.

The spelling of 25214457 in words is "twenty-five million, two hundred fourteen thousand, four hundred fifty-seven".