61253225 has 18 divisors (see below), whose sum is σ = 83490750. Its totient is φ = 44545600.

The previous prime is 61253219. The next prime is 61253233. The reversal of 61253225 is 52235216.

It can be written as a sum of positive squares in 3 ways, for example, as 1283689 + 59969536 = 1133^2 + 7744^2 .

It is not a de Polignac number, because 61253225 - 2⁸ = 61252969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61253194 and 61253203.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7100 + ... + 13149.

It is an arithmetic number, because the mean of its divisors is an integer number (4638375).

Almost surely, 2^61253225 is an apocalyptic number.

It is an amenable number.

61253225 is a deficient number, since it is larger than the sum of its proper divisors (22237525).

61253225 is a wasteful number, since it uses less digits than its factorization.

61253225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20281 (or 20265 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 61253225 is about 7826.4439562294. The cubic root of 61253225 is about 394.1936764137.

Subtracting from 61253225 its reverse (52235216), we obtain a square (9018009 = 3003²).

The spelling of 61253225 in words is "sixty-one million, two hundred fifty-three thousand, two hundred twenty-five".