25011642 has 16 divisors (see below), whose sum is σ = 50284800. Its totient is φ = 8293632.

The previous prime is 25011631. The next prime is 25011643. The reversal of 25011642 is 24611052.

It is not an unprimeable number, because it can be changed into a prime (25011643) 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, 9642 + ... + 11957.

It is an arithmetic number, because the mean of its divisors is an integer number (3142800).

Almost surely, 2^25011642 is an apocalyptic number.

25011642 is an abundant number, since it is smaller than the sum of its proper divisors (25273158).

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

25011642 is a wasteful number, since it uses less digits than its factorization.

25011642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21797.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25011642 is about 5001.1640644954. The cubic root of 25011642 is about 292.4471553303.

Adding to 25011642 its reverse (24611052), we get a palindrome (49622694).

The spelling of 25011642 in words is "twenty-five million, eleven thousand, six hundred forty-two".