25401925717 has 16 divisors (see below), whose sum is σ = 30044741760. Its totient is φ = 21013247808.

The previous prime is 25401925649. The next prime is 25401925741. The reversal of 25401925717 is 71752910452.

It is not a de Polignac number, because 25401925717 - 2¹⁹ = 25401401429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401925777) 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, 469038 + ... + 520384.

It is an arithmetic number, because the mean of its divisors is an integer number (1877796360).

Almost surely, 2^25401925717 is an apocalyptic number.

It is an amenable number.

25401925717 is a deficient number, since it is larger than the sum of its proper divisors (4642816043).

25401925717 is a wasteful number, since it uses less digits than its factorization.

25401925717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53820.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 25401925717 in words is "twenty-five billion, four hundred one million, nine hundred twenty-five thousand, seven hundred seventeen".