25200673778 has 16 divisors (see below), whose sum is σ = 43597498560. Its totient is φ = 10701202896.

The previous prime is 25200673723. The next prime is 25200673801. The reversal of 25200673778 is 87737600252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8255576 + ... + 8258627.

It is an arithmetic number, because the mean of its divisors is an integer number (2724843660).

Almost surely, 2^25200673778 is an apocalyptic number.

25200673778 is a deficient number, since it is larger than the sum of its proper divisors (18396824782).

25200673778 is a wasteful number, since it uses less digits than its factorization.

25200673778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16514321.

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 25200673778 in words is "twenty-five billion, two hundred million, six hundred seventy-three thousand, seven hundred seventy-eight".