25629742 has 4 divisors (see below), whose sum is σ = 38444616. Its totient is φ = 12814870.

The previous prime is 25629739. The next prime is 25629787. The reversal of 25629742 is 24792652.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6407434 + ... + 6407437.

It is an arithmetic number, because the mean of its divisors is an integer number (9611154).

Almost surely, 2^25629742 is an apocalyptic number.

25629742 is a deficient number, since it is larger than the sum of its proper divisors (12814874).

25629742 is a wasteful number, since it uses less digits than its factorization.

25629742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814873.

The product of its digits is 60480, while the sum is 37.

The square root of 25629742 is about 5062.5825425370. The cubic root of 25629742 is about 294.8366116197.

The spelling of 25629742 in words is "twenty-five million, six hundred twenty-nine thousand, seven hundred forty-two".