25025378764 has 6 divisors (see below), whose sum is σ = 43794412844. Its totient is φ = 12512689380.

The previous prime is 25025378761. The next prime is 25025378789. The reversal of 25025378764 is 46787352052.

It is not an unprimeable number, because it can be changed into a prime (25025378761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128172342 + ... + 3128172349.

Almost surely, 2^25025378764 is an apocalyptic number.

It is an amenable number.

25025378764 is a deficient number, since it is larger than the sum of its proper divisors (18769034080).

25025378764 is a wasteful number, since it uses less digits than its factorization.

25025378764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256344695 (or 6256344693 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 25025378764 in words is "twenty-five billion, twenty-five million, three hundred seventy-eight thousand, seven hundred sixty-four".