25746642546 has 8 divisors (see below), whose sum is σ = 51493285104. Its totient is φ = 8582214180.

The previous prime is 25746642541. The next prime is 25746642583. The reversal of 25746642546 is 64524664752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

25746642546 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25746642541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145553540 + ... + 2145553551.

It is an arithmetic number, because the mean of its divisors is an integer number (6436660638).

Almost surely, 2^25746642546 is an apocalyptic number.

25746642546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25746642546 is a wasteful number, since it uses less digits than its factorization.

25746642546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291107096.

The product of its digits is 9676800, while the sum is 51.

The spelling of 25746642546 in words is "twenty-five billion, seven hundred forty-six million, six hundred forty-two thousand, five hundred forty-six".