25222231425 has 12 divisors (see below), whose sum is σ = 41700756080. Its totient is φ = 13451856720.

The previous prime is 25222231421. The next prime is 25222231469. The reversal of 25222231425 is 52413222252.

It is a happy number.

It is not a de Polignac number, because 25222231425 - 2² = 25222231421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25222231392 and 25222231401.

It is not an unprimeable number, because it can be changed into a prime (25222231421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168148135 + ... + 168148284.

Almost surely, 2^25222231425 is an apocalyptic number.

25222231425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25222231425 is a deficient number, since it is larger than the sum of its proper divisors (16478524655).

25222231425 is a wasteful number, since it uses less digits than its factorization.

25222231425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336296432 (or 336296427 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

Adding to 25222231425 its reverse (52413222252), we get a palindrome (77635453677).

The spelling of 25222231425 in words is "twenty-five billion, two hundred twenty-two million, two hundred thirty-one thousand, four hundred twenty-five".