25430255401 has 4 divisors (see below), whose sum is σ = 25432461712. Its totient is φ = 25428049092.

The previous prime is 25430255387. The next prime is 25430255429. The reversal of 25430255401 is 10455203452.

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 25430255401 - 2¹⁷ = 25430124329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25430255801) 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, 1085775 + ... + 1108948.

It is an arithmetic number, because the mean of its divisors is an integer number (6358115428).

Almost surely, 2^25430255401 is an apocalyptic number.

It is an amenable number.

25430255401 is a deficient number, since it is larger than the sum of its proper divisors (2206311).

25430255401 is a wasteful number, since it uses less digits than its factorization.

25430255401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206310.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 25430255401 its reverse (10455203452), we get a palindrome (35885458853).

The spelling of 25430255401 in words is "twenty-five billion, four hundred thirty million, two hundred fifty-five thousand, four hundred one".