25761562001 has 4 divisors (see below), whose sum is σ = 29441785152. Its totient is φ = 22081338852.

The previous prime is 25761561989. The next prime is 25761562003. The reversal of 25761562001 is 10026516752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25761562001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25761562003) 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, 1840111565 + ... + 1840111578.

It is an arithmetic number, because the mean of its divisors is an integer number (7360446288).

Almost surely, 2^25761562001 is an apocalyptic number.

It is an amenable number.

25761562001 is a deficient number, since it is larger than the sum of its proper divisors (3680223151).

25761562001 is an equidigital number, since it uses as much as digits as its factorization.

25761562001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680223150.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 25761562001 in words is "twenty-five billion, seven hundred sixty-one million, five hundred sixty-two thousand, one".