25216762609 has 16 divisors (see below), whose sum is σ = 27868561920. Its totient is φ = 22695354880.

The previous prime is 25216762607. The next prime is 25216762673. The reversal of 25216762609 is 90626761252.

It is not a de Polignac number, because 25216762609 - 2¹ = 25216762607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25216762603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039157 + ... + 2051485.

It is an arithmetic number, because the mean of its divisors is an integer number (1741785120).

Almost surely, 2^25216762609 is an apocalyptic number.

It is an amenable number.

25216762609 is a deficient number, since it is larger than the sum of its proper divisors (2651799311).

25216762609 is a wasteful number, since it uses less digits than its factorization.

25216762609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17600.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 25216762609 in words is "twenty-five billion, two hundred sixteen million, seven hundred sixty-two thousand, six hundred nine".