25671825949 has 32 divisors (see below), whose sum is σ = 32342685696. Its totient is φ = 19794304320.

The previous prime is 25671825931. The next prime is 25671825973. The reversal of 25671825949 is 94952817652.

It is a happy number.

It is not a de Polignac number, because 25671825949 - 2⁹ = 25671825437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25671825893 and 25671825902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25671825929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12299784 + ... + 12301870.

It is an arithmetic number, because the mean of its divisors is an integer number (1010708928).

Almost surely, 2^25671825949 is an apocalyptic number.

It is an amenable number.

25671825949 is a deficient number, since it is larger than the sum of its proper divisors (6670859747).

25671825949 is a wasteful number, since it uses less digits than its factorization.

25671825949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705.

The product of its digits is 10886400, while the sum is 58.

The spelling of 25671825949 in words is "twenty-five billion, six hundred seventy-one million, eight hundred twenty-five thousand, nine hundred forty-nine".