25625415016 has 8 divisors (see below), whose sum is σ = 48047653170. Its totient is φ = 12812707504.

The previous prime is 25625414993. The next prime is 25625415047. The reversal of 25625415016 is 61051452652.

It can be written as a sum of positive squares in only one way, i.e., 25614722116 + 10692900 = 160046^2 + 3270^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601588431 + ... + 1601588446.

Almost surely, 2^25625415016 is an apocalyptic number.

It is an amenable number.

25625415016 is a deficient number, since it is larger than the sum of its proper divisors (22422238154).

25625415016 is a wasteful number, since it uses less digits than its factorization.

25625415016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203176883 (or 3203176879 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 25625415016 its reverse (61051452652), we get a palindrome (86676867668).

The spelling of 25625415016 in words is "twenty-five billion, six hundred twenty-five million, four hundred fifteen thousand, sixteen".