25331220425 has 12 divisors (see below), whose sum is σ = 35897958336. Its totient is φ = 17369979600.

The previous prime is 25331220419. The next prime is 25331220461. The reversal of 25331220425 is 52402213352.

It is not a de Polignac number, because 25331220425 - 2⁸ = 25331220169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72374741 + ... + 72375090.

It is an arithmetic number, because the mean of its divisors is an integer number (2991496528).

Almost surely, 2^25331220425 is an apocalyptic number.

25331220425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25331220425 is a deficient number, since it is larger than the sum of its proper divisors (10566737911).

25331220425 is a wasteful number, since it uses less digits than its factorization.

25331220425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144749848 (or 144749843 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 25331220425 its reverse (52402213352), we get a palindrome (77733433777).

The spelling of 25331220425 in words is "twenty-five billion, three hundred thirty-one million, two hundred twenty thousand, four hundred twenty-five".