25103540678 has 4 divisors (see below), whose sum is σ = 37655311020. Its totient is φ = 12551770338.

The previous prime is 25103540551. The next prime is 25103540681. The reversal of 25103540678 is 87604530152.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275885168 + ... + 6275885171.

It is an arithmetic number, because the mean of its divisors is an integer number (9413827755).

Almost surely, 2^25103540678 is an apocalyptic number.

25103540678 is a deficient number, since it is larger than the sum of its proper divisors (12551770342).

25103540678 is a wasteful number, since it uses less digits than its factorization.

25103540678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551770341.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 25103540678 in words is "twenty-five billion, one hundred three million, five hundred forty thousand, six hundred seventy-eight".