25212047 has 8 divisors (see below), whose sum is σ = 29357856. Its totient is φ = 21202272.

The previous prime is 25212043. The next prime is 25212053. The reversal of 25212047 is 74021252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25212047 - 2² = 25212043 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 (25212041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33608 + ... + 34349.

It is an arithmetic number, because the mean of its divisors is an integer number (3669732).

Almost surely, 2^25212047 is an apocalyptic number.

25212047 is a deficient number, since it is larger than the sum of its proper divisors (4145809).

25212047 is an equidigital number, since it uses as much as digits as its factorization.

25212047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68017.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 25212047 is about 5021.1599257542. The cubic root of 25212047 is about 293.2261530199.

Adding to 25212047 its reverse (74021252), we get a palindrome (99233299).

The spelling of 25212047 in words is "twenty-five million, two hundred twelve thousand, forty-seven".