25470765688 has 8 divisors (see below), whose sum is σ = 47757685680. Its totient is φ = 12735382840.

The previous prime is 25470765623. The next prime is 25470765689. The reversal of 25470765688 is 88656707452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×25470765688² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25470765689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1591922848 + ... + 1591922863.

It is an arithmetic number, because the mean of its divisors is an integer number (5969710710).

Almost surely, 2^25470765688 is an apocalyptic number.

It is an amenable number.

25470765688 is a deficient number, since it is larger than the sum of its proper divisors (22286919992).

25470765688 is a wasteful number, since it uses less digits than its factorization.

25470765688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183845717 (or 3183845713 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 58.

The spelling of 25470765688 in words is "twenty-five billion, four hundred seventy million, seven hundred sixty-five thousand, six hundred eighty-eight".