25145642 has 8 divisors (see below), whose sum is σ = 38071296. Its totient is φ = 12455212.

The previous prime is 25145641. The next prime is 25145657. The reversal of 25145642 is 24654152.

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

It is not an unprimeable number, because it can be changed into a prime (25145641) 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, 58538 + ... + 58965.

It is an arithmetic number, because the mean of its divisors is an integer number (4758912).

Almost surely, 2^25145642 is an apocalyptic number.

25145642 is a deficient number, since it is larger than the sum of its proper divisors (12925654).

25145642 is a wasteful number, since it uses less digits than its factorization.

25145642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117612.

The product of its digits is 9600, while the sum is 29.

The square root of 25145642 is about 5014.5430499698. The cubic root of 25145642 is about 292.9684877990.

Adding to 25145642 its reverse (24654152), we get a palindrome (49799794).

The spelling of 25145642 in words is "twenty-five million, one hundred forty-five thousand, six hundred forty-two".