25632642 has 16 divisors (see below), whose sum is σ = 58588992. Its totient is φ = 7323600.

The previous prime is 25632631. The next prime is 25632661. The reversal of 25632642 is 24623652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305109 + ... + 305192.

It is an arithmetic number, because the mean of its divisors is an integer number (3661812).

Almost surely, 2^25632642 is an apocalyptic number.

25632642 is an abundant number, since it is smaller than the sum of its proper divisors (32956350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25632642 is a wasteful number, since it uses less digits than its factorization.

25632642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610313.

The product of its digits is 17280, while the sum is 30.

The square root of 25632642 is about 5062.8689495186. The cubic root of 25632642 is about 294.8477314342.

The spelling of 25632642 in words is "twenty-five million, six hundred thirty-two thousand, six hundred forty-two".