25220432401 has 16 divisors (see below), whose sum is σ = 26833996800. Its totient is φ = 23635981008.

The previous prime is 25220432383. The next prime is 25220432431. The reversal of 25220432401 is 10423402252.

It is a cyclic number.

It is not a de Polignac number, because 25220432401 - 2⁷ = 25220432273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25220432431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1987860 + ... + 2000506.

It is an arithmetic number, because the mean of its divisors is an integer number (1677124800).

Almost surely, 2^25220432401 is an apocalyptic number.

It is an amenable number.

25220432401 is a deficient number, since it is larger than the sum of its proper divisors (1613564399).

25220432401 is a wasteful number, since it uses less digits than its factorization.

25220432401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 25220432401 its reverse (10423402252), we get a palindrome (35643834653).

The spelling of 25220432401 in words is "twenty-five billion, two hundred twenty million, four hundred thirty-two thousand, four hundred one".