25547750643 has 8 divisors (see below), whose sum is σ = 34706378448. Its totient is φ = 16710478304.

The previous prime is 25547750623. The next prime is 25547750647. The reversal of 25547750643 is 34605774552.

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

It is a cyclic number.

It is not a de Polignac number, because 25547750643 - 2¹⁴ = 25547734259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25547750592 and 25547750601.

It is not an unprimeable number, because it can be changed into a prime (25547750647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80338680 + ... + 80338997.

It is an arithmetic number, because the mean of its divisors is an integer number (4338297306).

Almost surely, 2^25547750643 is an apocalyptic number.

25547750643 is a deficient number, since it is larger than the sum of its proper divisors (9158627805).

25547750643 is a wasteful number, since it uses less digits than its factorization.

25547750643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160677733.

The product of its (nonzero) digits is 3528000, while the sum is 48.

The spelling of 25547750643 in words is "twenty-five billion, five hundred forty-seven million, seven hundred fifty thousand, six hundred forty-three".