25719465738 has 8 divisors (see below), whose sum is σ = 51438931488. Its totient is φ = 8573155244.

The previous prime is 25719465719. The next prime is 25719465769. The reversal of 25719465738 is 83756491752.

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

25719465738 is an admirable number.

It is a super-2 number, since 2×25719465738² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143288806 + ... + 2143288817.

It is an arithmetic number, because the mean of its divisors is an integer number (6429866436).

Almost surely, 2^25719465738 is an apocalyptic number.

25719465738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25719465738 is a wasteful number, since it uses less digits than its factorization.

25719465738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286577628.

The product of its digits is 12700800, while the sum is 57.

The spelling of 25719465738 in words is "twenty-five billion, seven hundred nineteen million, four hundred sixty-five thousand, seven hundred thirty-eight".