25420006 has 4 divisors (see below), whose sum is σ = 38130012. Its totient is φ = 12710002.

The previous prime is 25419971. The next prime is 25420007. The reversal of 25420006 is 60002452.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6355000 + ... + 6355003.

It is an arithmetic number, because the mean of its divisors is an integer number (9532503).

Almost surely, 2^25420006 is an apocalyptic number.

25420006 is a deficient number, since it is larger than the sum of its proper divisors (12710006).

25420006 is a wasteful number, since it uses less digits than its factorization.

25420006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12710005.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 25420006 is about 5041.8256614048. The cubic root of 25420006 is about 294.0301618060.

Adding to 25420006 its reverse (60002452), we get a palindrome (85422458).

The spelling of 25420006 in words is "twenty-five million, four hundred twenty thousand, six".