25242111201 has 4 divisors (see below), whose sum is σ = 33656148272. Its totient is φ = 16828074132.

The previous prime is 25242111179. The next prime is 25242111229. The reversal of 25242111201 is 10211124252.

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 not a de Polignac number, because 25242111201 - 2²³ = 25233722593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25242151201) 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, 4207018531 + ... + 4207018536.

It is an arithmetic number, because the mean of its divisors is an integer number (8414037068).

Almost surely, 2^25242111201 is an apocalyptic number.

It is an amenable number.

25242111201 is a deficient number, since it is larger than the sum of its proper divisors (8414037071).

25242111201 is an equidigital number, since it uses as much as digits as its factorization.

25242111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414037070.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 25242111201 its reverse (10211124252), we get a palindrome (35453235453).

The spelling of 25242111201 in words is "twenty-five billion, two hundred forty-two million, one hundred eleven thousand, two hundred one".