25546225 has 6 divisors (see below), whose sum is σ = 31677350. Its totient is φ = 20436960.

The previous prime is 25546219. The next prime is 25546231. The reversal of 25546225 is 52264552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25546219) and next prime (25546231).

It can be written as a sum of positive squares in 3 ways, for example, as 53824 + 25492401 = 232^2 + 5049^2 .

It is not a de Polignac number, because 25546225 - 2³ = 25546217 is a prime.

It is a super-2 number, since 2×25546225² = 1305219223501250, which contains 22 as substring.

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, 510900 + ... + 510949.

Almost surely, 2^25546225 is an apocalyptic number.

25546225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25546225 is a deficient number, since it is larger than the sum of its proper divisors (6131125).

25546225 is a wasteful number, since it uses less digits than its factorization.

25546225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021859 (or 1021854 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 25546225 is about 5054.3273538622. The cubic root of 25546225 is about 294.5160119008.

The spelling of 25546225 in words is "twenty-five million, five hundred forty-six thousand, two hundred twenty-five".