61122625 has 8 divisors (see below), whose sum is σ = 76281192. Its totient is φ = 48898000.

The previous prime is 61122613. The next prime is 61122641. The reversal of 61122625 is 52622116.

It can be written as a sum of positive squares in 4 ways, for example, as 3908529 + 57214096 = 1977^2 + 7564^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61122625 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61122625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244366 + ... + 244615.

It is an arithmetic number, because the mean of its divisors is an integer number (9535149).

Almost surely, 2^61122625 is an apocalyptic number.

It is an amenable number.

61122625 is a deficient number, since it is larger than the sum of its proper divisors (15158567).

61122625 is an equidigital number, since it uses as much as digits as its factorization.

61122625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488996 (or 488986 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 61122625 is about 7818.0959958292. The cubic root of 61122625 is about 393.9133193324.

The spelling of 61122625 in words is "sixty-one million, one hundred twenty-two thousand, six hundred twenty-five".