25940642 has 32 divisors (see below), whose sum is σ = 49980672. Its totient is φ = 9814464.

The previous prime is 25940641. The next prime is 25940671. The reversal of 25940642 is 24604952.

It is a junction number, because it is equal to n+sod(n) for n = 25940599 and 25940608.

It is not an unprimeable number, because it can be changed into a prime (25940641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1088 + ... + 7284.

It is an arithmetic number, because the mean of its divisors is an integer number (1561896).

Almost surely, 2^25940642 is an apocalyptic number.

25940642 is a deficient number, since it is larger than the sum of its proper divisors (24040030).

25940642 is a wasteful number, since it uses less digits than its factorization.

25940642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 25940642 is about 5093.1956569525. The cubic root of 25940642 is about 296.0239891076.

The spelling of 25940642 in words is "twenty-five million, nine hundred forty thousand, six hundred forty-two".