25465731322001 has 4 divisors (see below), whose sum is σ = 25691091776292. Its totient is φ = 25240370867712.

The previous prime is 25465731321997. The next prime is 25465731322063. The reversal of 25465731322001 is 10022313756452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2106141075025 + 23359590246976 = 1451255^2 + 4833176^2 .

It is a cyclic number.

It is not a de Polignac number, because 25465731322001 - 2² = 25465731321997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25465731322001.

It is not an unprimeable number, because it can be changed into a prime (25465731022001) 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, 112680226976 + ... + 112680227201.

It is an arithmetic number, because the mean of its divisors is an integer number (6422772944073).

Almost surely, 2^{25465731322001} is an apocalyptic number.

It is an amenable number.

25465731322001 is a deficient number, since it is larger than the sum of its proper divisors (225360454291).

25465731322001 is a wasteful number, since it uses less digits than its factorization.

25465731322001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225360454290.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 25465731322001 in words is "twenty-five trillion, four hundred sixty-five billion, seven hundred thirty-one million, three hundred twenty-two thousand, one".