25701124478 has 16 divisors (see below), whose sum is σ = 40644069840. Its totient is φ = 12155212800.

The previous prime is 25701124469. The next prime is 25701124489. The reversal of 25701124478 is 87442110752.

It is a Curzon number.

It is a congruent number.

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, 503213 + ... + 551928.

It is an arithmetic number, because the mean of its divisors is an integer number (2540254365).

Almost surely, 2^25701124478 is an apocalyptic number.

25701124478 is a deficient number, since it is larger than the sum of its proper divisors (14942945362).

25701124478 is a wasteful number, since it uses less digits than its factorization.

25701124478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055803.

The product of its (nonzero) digits is 125440, while the sum is 41.

The spelling of 25701124478 in words is "twenty-five billion, seven hundred one million, one hundred twenty-four thousand, four hundred seventy-eight".