25353450401 has 4 divisors (see below), whose sum is σ = 25363031232. Its totient is φ = 25343869572.

The previous prime is 25353450391. The next prime is 25353450427. The reversal of 25353450401 is 10405435352.

It is a happy number.

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 25353450401 - 2³⁴ = 8173581217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25353450301) 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, 4786445 + ... + 4791738.

It is an arithmetic number, because the mean of its divisors is an integer number (6340757808).

Almost surely, 2^25353450401 is an apocalyptic number.

It is an amenable number.

25353450401 is a deficient number, since it is larger than the sum of its proper divisors (9580831).

25353450401 is an equidigital number, since it uses as much as digits as its factorization.

25353450401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580830.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 25353450401 its reverse (10405435352), we get a palindrome (35758885753).

The spelling of 25353450401 in words is "twenty-five billion, three hundred fifty-three million, four hundred fifty thousand, four hundred one".