61265225 has 12 divisors (see below), whose sum is σ = 86821824. Its totient is φ = 42010320.

The previous prime is 61265221. The next prime is 61265231. The reversal of 61265225 is 52256216.

It is not a de Polignac number, because 61265225 - 2² = 61265221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61265221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174869 + ... + 175218.

It is an arithmetic number, because the mean of its divisors is an integer number (7235152).

Almost surely, 2^61265225 is an apocalyptic number.

It is an amenable number.

61265225 is a deficient number, since it is larger than the sum of its proper divisors (25556599).

61265225 is a wasteful number, since it uses less digits than its factorization.

61265225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350104 (or 350099 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 61265225 is about 7827.2105503813. The cubic root of 61265225 is about 394.2194166380.

Subtracting from 61265225 its reverse (52256216), we obtain a palindrome (9009009).

The spelling of 61265225 in words is "sixty-one million, two hundred sixty-five thousand, two hundred twenty-five".