25996692485 has 8 divisors (see below), whose sum is σ = 33031091736. Its totient is φ = 19573980160.

The previous prime is 25996692481. The next prime is 25996692497. The reversal of 25996692485 is 58429669952.

It can be written as a sum of positive squares in 4 ways, for example, as 13649482561 + 12347209924 = 116831^2 + 111118^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25996692485 - 2² = 25996692481 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 (25996692481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152921636 + ... + 152921805.

It is an arithmetic number, because the mean of its divisors is an integer number (4128886467).

Almost surely, 2^25996692485 is an apocalyptic number.

It is an amenable number.

25996692485 is a deficient number, since it is larger than the sum of its proper divisors (7034399251).

25996692485 is a wasteful number, since it uses less digits than its factorization.

25996692485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305843463.

The product of its digits is 83980800, while the sum is 65.

The spelling of 25996692485 in words is "twenty-five billion, nine hundred ninety-six million, six hundred ninety-two thousand, four hundred eighty-five".