25387769797 has 16 divisors (see below), whose sum is σ = 27814308480. Its totient is φ = 23029186752.

The previous prime is 25387769789. The next prime is 25387769873. The reversal of 25387769797 is 79796778352.

It is a happy number.

It is not a de Polignac number, because 25387769797 - 2³ = 25387769789 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 (25387769747) 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, 3135288 + ... + 3143374.

It is an arithmetic number, because the mean of its divisors is an integer number (1738394280).

Almost surely, 2^25387769797 is an apocalyptic number.

It is an amenable number.

25387769797 is a deficient number, since it is larger than the sum of its proper divisors (2426538683).

25387769797 is a wasteful number, since it uses less digits than its factorization.

25387769797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12252.

The product of its digits is 280052640, while the sum is 70.

The spelling of 25387769797 in words is "twenty-five billion, three hundred eighty-seven million, seven hundred sixty-nine thousand, seven hundred ninety-seven".