25155346225 has 24 divisors (see below), whose sum is σ = 31863684800. Its totient is φ = 19694664000.

The previous prime is 25155346213. The next prime is 25155346241. The reversal of 25155346225 is 52264355152.

It is not a de Polignac number, because 25155346225 - 2⁹ = 25155345713 is a prime.

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, 262030 + ... + 344920.

Almost surely, 2^25155346225 is an apocalyptic number.

25155346225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25155346225 is a deficient number, since it is larger than the sum of its proper divisors (6708338575).

25155346225 is a wasteful number, since it uses less digits than its factorization.

25155346225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83161 (or 83156 counting only the distinct ones).

The product of its digits is 360000, while the sum is 40.

The spelling of 25155346225 in words is "twenty-five billion, one hundred fifty-five million, three hundred forty-six thousand, two hundred twenty-five".