25428191001 has 16 divisors (see below), whose sum is σ = 34324528896. Its totient is φ = 16742130896.

The previous prime is 25428190981. The next prime is 25428191053. The reversal of 25428191001 is 10019182452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25428191001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25428191071) 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, 781606 + ... + 813488.

It is an arithmetic number, because the mean of its divisors is an integer number (2145283056).

Almost surely, 2^25428191001 is an apocalyptic number.

It is an amenable number.

25428191001 is a deficient number, since it is larger than the sum of its proper divisors (8896337895).

25428191001 is a wasteful number, since it uses less digits than its factorization.

25428191001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35172.

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 25428191001 in words is "twenty-five billion, four hundred twenty-eight million, one hundred ninety-one thousand, one".