25401222141 has 4 divisors (see below), whose sum is σ = 33868296192. Its totient is φ = 16934148092.

The previous prime is 25401222109. The next prime is 25401222157. The reversal of 25401222141 is 14122210452.

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 not a de Polignac number, because 25401222141 - 2⁵ = 25401222109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401222101) 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, 4233537021 + ... + 4233537026.

It is an arithmetic number, because the mean of its divisors is an integer number (8467074048).

Almost surely, 2^25401222141 is an apocalyptic number.

It is an amenable number.

25401222141 is a deficient number, since it is larger than the sum of its proper divisors (8467074051).

25401222141 is an equidigital number, since it uses as much as digits as its factorization.

25401222141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8467074050.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 25401222141 its reverse (14122210452), we get a palindrome (39523432593).

The spelling of 25401222141 in words is "twenty-five billion, four hundred one million, two hundred twenty-two thousand, one hundred forty-one".