25542505 has 8 divisors (see below), whose sum is σ = 30938112. Its totient is φ = 20242608.

The previous prime is 25542499. The next prime is 25542509. The reversal of 25542505 is 50524552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25542505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25542509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23337 + ... + 24406.

It is an arithmetic number, because the mean of its divisors is an integer number (3867264).

Almost surely, 2^25542505 is an apocalyptic number.

It is an amenable number.

25542505 is a deficient number, since it is larger than the sum of its proper divisors (5395607).

25542505 is a wasteful number, since it uses less digits than its factorization.

25542505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47855.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 25542505 is about 5053.9593389738. The cubic root of 25542505 is about 294.5017155583.

The spelling of 25542505 in words is "twenty-five million, five hundred forty-two thousand, five hundred five".