25004920671 has 16 divisors (see below), whose sum is σ = 37165004800. Its totient is φ = 16615642104.

The previous prime is 25004920643. The next prime is 25004920693. The reversal of 25004920671 is 17602940052.

25004920671 is a `hidden beast` number, since 2 + 500 + 4 + 92 + 0 + 67 + 1 = 666.

It is not a de Polignac number, because 25004920671 - 2¹⁰ = 25004919647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25004920601) 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, 1500031 + ... + 1516608.

It is an arithmetic number, because the mean of its divisors is an integer number (2322812800).

Almost surely, 2^25004920671 is an apocalyptic number.

25004920671 is a deficient number, since it is larger than the sum of its proper divisors (12160084129).

25004920671 is a wasteful number, since it uses less digits than its factorization.

25004920671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016955 (or 3016949 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 25004920671 in words is "twenty-five billion, four million, nine hundred twenty thousand, six hundred seventy-one".