25243331689225 has 24 divisors (see below), whose sum is σ = 33716726491392. Its totient is φ = 18637264737600.

The previous prime is 25243331689211. The next prime is 25243331689231. The reversal of 25243331689225 is 52298613334252.

It is a happy number.

It is not a de Polignac number, because 25243331689225 - 2¹³ = 25243331681033 is a prime.

It is a super-2 number, since 2×25243331689225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6729211 + ... + 9786160.

It is an arithmetic number, because the mean of its divisors is an integer number (1404863603808).

Almost surely, 2^{25243331689225} is an apocalyptic number.

25243331689225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25243331689225 is a deficient number, since it is larger than the sum of its proper divisors (8473394802167).

25243331689225 is a wasteful number, since it uses less digits than its factorization.

25243331689225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16520097 (or 16520092 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 55.

The spelling of 25243331689225 in words is "twenty-five trillion, two hundred forty-three billion, three hundred thirty-one million, six hundred eighty-nine thousand, two hundred twenty-five".