25690729393 has 8 divisors (see below), whose sum is σ = 29362325120. Its totient is φ = 22019506560.

The previous prime is 25690729387. The next prime is 25690729403. The reversal of 25690729393 is 39392709652.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25690729393 - 2¹³ = 25690721201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25690729333) 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, 74548 + ... + 238618.

It is an arithmetic number, because the mean of its divisors is an integer number (3670290640).

Almost surely, 2^25690729393 is an apocalyptic number.

It is an amenable number.

25690729393 is a deficient number, since it is larger than the sum of its proper divisors (3671595727).

25690729393 is a wasteful number, since it uses less digits than its factorization.

25690729393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186447.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The spelling of 25690729393 in words is "twenty-five billion, six hundred ninety million, seven hundred twenty-nine thousand, three hundred ninety-three".