25220407430 has 16 divisors (see below), whose sum is σ = 46861144704. Its totient is φ = 9762738240.

The previous prime is 25220407427. The next prime is 25220407441. The reversal of 25220407430 is 3470402252.

It is a junction number, because it is equal to n+sod(n) for n = 25220407393 and 25220407402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40677767 + ... + 40678386.

It is an arithmetic number, because the mean of its divisors is an integer number (2928821544).

Almost surely, 2^25220407430 is an apocalyptic number.

25220407430 is a deficient number, since it is larger than the sum of its proper divisors (21640737274).

25220407430 is a wasteful number, since it uses less digits than its factorization.

25220407430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81356191.

The product of its (nonzero) digits is 13440, while the sum is 29.

Adding to 25220407430 its reverse (3470402252), we get a palindrome (28690809682).

The spelling of 25220407430 in words is "twenty-five billion, two hundred twenty million, four hundred seven thousand, four hundred thirty".