25394467651 has 16 divisors (see below), whose sum is σ = 30658498560. Its totient is φ = 20547656640.

The previous prime is 25394467643. The next prime is 25394467661. The reversal of 25394467651 is 15676449352.

It is not a de Polignac number, because 25394467651 - 2³ = 25394467643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25394467661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302371 + ... + 377116.

It is an arithmetic number, because the mean of its divisors is an integer number (1916156160).

Almost surely, 2^25394467651 is an apocalyptic number.

25394467651 is a deficient number, since it is larger than the sum of its proper divisors (5264030909).

25394467651 is a wasteful number, since it uses less digits than its factorization.

25394467651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679794.

The product of its digits is 5443200, while the sum is 52.

The spelling of 25394467651 in words is "twenty-five billion, three hundred ninety-four million, four hundred sixty-seven thousand, six hundred fifty-one".