25051225 has 6 divisors (see below), whose sum is σ = 31063550. Its totient is φ = 20040960.

The previous prime is 25051219. The next prime is 25051277. The reversal of 25051225 is 52215052.

It can be written as a sum of positive squares in 3 ways, for example, as 3549456 + 21501769 = 1884^2 + 4637^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25051225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25051196 and 25051205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501000 + ... + 501049.

Almost surely, 2^25051225 is an apocalyptic number.

25051225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25051225 is a deficient number, since it is larger than the sum of its proper divisors (6012325).

25051225 is a wasteful number, since it uses less digits than its factorization.

25051225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002059 (or 1002054 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25051225 is about 5005.1198786842. The cubic root of 25051225 is about 292.6013479857.

Adding to 25051225 its reverse (52215052), we get a palindrome (77266277).

The spelling of 25051225 in words is "twenty-five million, fifty-one thousand, two hundred twenty-five".