25500810451 has 16 divisors (see below), whose sum is σ = 26337778560. Its totient is φ = 24677677440.

The previous prime is 25500810443. The next prime is 25500810463. The reversal of 25500810451 is 15401800552.

It is a cyclic number.

It is not a de Polignac number, because 25500810451 - 2³ = 25500810443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25500810431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5076321 + ... + 5081341.

It is an arithmetic number, because the mean of its divisors is an integer number (1646111160).

Almost surely, 2^25500810451 is an apocalyptic number.

25500810451 is a deficient number, since it is larger than the sum of its proper divisors (836968109).

25500810451 is a wasteful number, since it uses less digits than its factorization.

25500810451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6366.

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 25500810451 in words is "twenty-five billion, five hundred million, eight hundred ten thousand, four hundred fifty-one".