25732442 has 8 divisors (see below), whose sum is σ = 38620596. Its totient is φ = 12858912.

The previous prime is 25732439. The next prime is 25732513. The reversal of 25732442 is 24423752.

It can be written as a sum of positive squares in 2 ways, for example, as 18757561 + 6974881 = 4331^2 + 2641^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 3728 + ... + 8084.

Almost surely, 2^25732442 is an apocalyptic number.

25732442 is a deficient number, since it is larger than the sum of its proper divisors (12888154).

25732442 is a wasteful number, since it uses less digits than its factorization.

25732442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7312.

The product of its digits is 13440, while the sum is 29.

The square root of 25732442 is about 5072.7154463857. The cubic root of 25732442 is about 295.2298964416.

The spelling of 25732442 in words is "twenty-five million, seven hundred thirty-two thousand, four hundred forty-two".