25325642 has 8 divisors (see below), whose sum is σ = 39298500. Its totient is φ = 12226144.

The previous prime is 25325639. The next prime is 25325647. The reversal of 25325642 is 24652352.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 2563201 = 4771^2 + 1601^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (25325647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218267 + ... + 218382.

Almost surely, 2^25325642 is an apocalyptic number.

25325642 is a deficient number, since it is larger than the sum of its proper divisors (13972858).

25325642 is a wasteful number, since it uses less digits than its factorization.

25325642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436680.

The product of its digits is 14400, while the sum is 29.

The square root of 25325642 is about 5032.4588423553. The cubic root of 25325642 is about 293.6658783115.

Adding to 25325642 its reverse (24652352), we get a palindrome (49977994).

The spelling of 25325642 in words is "twenty-five million, three hundred twenty-five thousand, six hundred forty-two".