25441523201 has 4 divisors (see below), whose sum is σ = 25509731412. Its totient is φ = 25373314992.

The previous prime is 25441523189. The next prime is 25441523227. The reversal of 25441523201 is 10232514452.

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 10930911601 + 14510611600 = 104551^2 + 120460^2 .

It is a cyclic number.

It is not a de Polignac number, because 25441523201 - 2²² = 25437328897 is a prime.

It is a super-2 number, since 2×25441523201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25441525201) 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, 34103546 + ... + 34104291.

It is an arithmetic number, because the mean of its divisors is an integer number (6377432853).

Almost surely, 2^25441523201 is an apocalyptic number.

It is an amenable number.

25441523201 is a deficient number, since it is larger than the sum of its proper divisors (68208211).

25441523201 is an equidigital number, since it uses as much as digits as its factorization.

25441523201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68208210.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 25441523201 in words is "twenty-five billion, four hundred forty-one million, five hundred twenty-three thousand, two hundred one".