25778735097 has 8 divisors (see below), whose sum is σ = 34403804160. Its totient is φ = 17169744720.

The previous prime is 25778735039. The next prime is 25778735123. The reversal of 25778735097 is 79053787752.

It is a happy number.

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

It is not a de Polignac number, because 25778735097 - 2⁶ = 25778735033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25778735097.

It is not an unprimeable number, because it can be changed into a prime (25778735197) 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, 4015929 + ... + 4022342.

It is an arithmetic number, because the mean of its divisors is an integer number (4300475520).

Almost surely, 2^25778735097 is an apocalyptic number.

It is an amenable number.

25778735097 is a deficient number, since it is larger than the sum of its proper divisors (8625069063).

25778735097 is a wasteful number, since it uses less digits than its factorization.

25778735097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039343.

The product of its (nonzero) digits is 25930800, while the sum is 60.

The spelling of 25778735097 in words is "twenty-five billion, seven hundred seventy-eight million, seven hundred thirty-five thousand, ninety-seven".