25761001 has 16 divisors (see below), whose sum is σ = 31622400. Its totient is φ = 20482560.

The previous prime is 25760983. The next prime is 25761007. The reversal of 25761001 is 10016752.

It is a de Polignac number, because none of the positive numbers 2^k-25761001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25761007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6925 + ... + 9973.

It is an arithmetic number, because the mean of its divisors is an integer number (1976400).

Almost surely, 2^25761001 is an apocalyptic number.

It is an amenable number.

25761001 is a deficient number, since it is larger than the sum of its proper divisors (5861399).

25761001 is a wasteful number, since it uses less digits than its factorization.

25761001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 25761001 is about 5075.5296275364. The cubic root of 25761001 is about 295.3390757846.

Adding to 25761001 its reverse (10016752), we get a palindrome (35777753).

The spelling of 25761001 in words is "twenty-five million, seven hundred sixty-one thousand, one".