25420349 has 4 divisors (see below), whose sum is σ = 25465440. Its totient is φ = 25375260.

The previous prime is 25420333. The next prime is 25420361. The reversal of 25420349 is 94302452.

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 a cyclic number.

It is not a de Polignac number, because 25420349 - 2⁴ = 25420333 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 (25420319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21689 + ... + 22830.

It is an arithmetic number, because the mean of its divisors is an integer number (6366360).

Almost surely, 2^25420349 is an apocalyptic number.

It is an amenable number.

25420349 is a deficient number, since it is larger than the sum of its proper divisors (45091).

25420349 is an equidigital number, since it uses as much as digits as its factorization.

25420349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45090.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 25420349 is about 5041.8596767463. The cubic root of 25420349 is about 294.0314842800.

The spelling of 25420349 in words is "twenty-five million, four hundred twenty thousand, three hundred forty-nine".