25154225 has 6 divisors (see below), whose sum is σ = 31191270. Its totient is φ = 20123360.

The previous prime is 25154221. The next prime is 25154273. The reversal of 25154225 is 52245152.

It can be written as a sum of positive squares in 3 ways, for example, as 1495729 + 23658496 = 1223^2 + 4864^2 .

It is not a de Polignac number, because 25154225 - 2² = 25154221 is a prime.

It is a super-3 number, since 3×25154225³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25154194 and 25154203.

It is not an unprimeable number, because it can be changed into a prime (25154221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503060 + ... + 503109.

It is an arithmetic number, because the mean of its divisors is an integer number (5198545).

Almost surely, 2^25154225 is an apocalyptic number.

25154225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25154225 is a deficient number, since it is larger than the sum of its proper divisors (6037045).

25154225 is a wasteful number, since it uses less digits than its factorization.

25154225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006179 (or 1006174 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 25154225 is about 5015.3987877336. The cubic root of 25154225 is about 293.0018171328.

Subtracting from 25154225 its product of digits (4000), we obtain a square (25150225 = 5015²).

Adding to 25154225 its reverse (52245152), we get a palindrome (77399377).

The spelling of 25154225 in words is "twenty-five million, one hundred fifty-four thousand, two hundred twenty-five".