25307402642 has 8 divisors (see below), whose sum is σ = 39611586816. Its totient is φ = 12103540372.

The previous prime is 25307402641. The next prime is 25307402647. The reversal of 25307402642 is 24620470352.

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 (25307402641) 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, 275080418 + ... + 275080509.

It is an arithmetic number, because the mean of its divisors is an integer number (4951448352).

Almost surely, 2^25307402642 is an apocalyptic number.

25307402642 is a deficient number, since it is larger than the sum of its proper divisors (14304184174).

25307402642 is a wasteful number, since it uses less digits than its factorization.

25307402642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550160952.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 25307402642 its reverse (24620470352), we get a palindrome (49927872994).

The spelling of 25307402642 in words is "twenty-five billion, three hundred seven million, four hundred two thousand, six hundred forty-two".