25481225 has 72 divisors (see below), whose sum is σ = 42068736. Its totient is φ = 15120000.

The previous prime is 25481219. The next prime is 25481231. The reversal of 25481225 is 52218452.

It is an interprime number because it is at equal distance from previous prime (25481219) and next prime (25481231).

It is not a de Polignac number, because 25481225 - 2¹² = 25477129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 417695 + ... + 417755.

It is an arithmetic number, because the mean of its divisors is an integer number (584288).

Almost surely, 2^25481225 is an apocalyptic number.

25481225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25481225 is a deficient number, since it is larger than the sum of its proper divisors (16587511).

25481225 is a wasteful number, since it uses less digits than its factorization.

25481225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 115 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 25481225 is about 5047.8931248591. The cubic root of 25481225 is about 294.2660101871.

Adding to 25481225 its reverse (52218452), we get a palindrome (77699677).

It can be divided in two parts, 2548 and 1225, that added together give a palindrome (3773).

The spelling of 25481225 in words is "twenty-five million, four hundred eighty-one thousand, two hundred twenty-five".