25454270642 has 8 divisors (see below), whose sum is σ = 38182281600. Its totient is φ = 12726843444.

The previous prime is 25454270641. The next prime is 25454270693. The reversal of 25454270642 is 24607245452.

25454270642 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25454270642.

It is not an unprimeable number, because it can be changed into a prime (25454270641) 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, 12542 + ... + 225977.

It is an arithmetic number, because the mean of its divisors is an integer number (4772785200).

Almost surely, 2^25454270642 is an apocalyptic number.

25454270642 is a deficient number, since it is larger than the sum of its proper divisors (12728010958).

25454270642 is a wasteful number, since it uses less digits than its factorization.

25454270642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291880.

The product of its (nonzero) digits is 537600, while the sum is 41.

The spelling of 25454270642 in words is "twenty-five billion, four hundred fifty-four million, two hundred seventy thousand, six hundred forty-two".