25617542 has 16 divisors (see below), whose sum is σ = 39859872. Its totient is φ = 12337920.

The previous prime is 25617523. The next prime is 25617547. The reversal of 25617542 is 24571652.

It is a junction number, because it is equal to n+sod(n) for n = 25617499 and 25617508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25617547) 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, 5942 + ... + 9302.

It is an arithmetic number, because the mean of its divisors is an integer number (2491242).

Almost surely, 2^25617542 is an apocalyptic number.

25617542 is a deficient number, since it is larger than the sum of its proper divisors (14242330).

25617542 is a wasteful number, since it uses less digits than its factorization.

25617542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its digits is 16800, while the sum is 32.

The square root of 25617542 is about 5061.3774804889. The cubic root of 25617542 is about 294.7898225215.

The spelling of 25617542 in words is "twenty-five million, six hundred seventeen thousand, five hundred forty-two".