61550625 has 40 divisors (see below), whose sum is σ = 108640224. Its totient is φ = 30880000.

The previous prime is 61550623. The next prime is 61550639. The reversal of 61550625 is 52605516.

It is not a de Polignac number, because 61550625 - 2¹ = 61550623 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61550592 and 61550601.

It is not an unprimeable number, because it can be changed into a prime (61550623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30910 + ... + 32840.

Almost surely, 2^61550625 is an apocalyptic number.

It is an amenable number.

61550625 is a deficient number, since it is larger than the sum of its proper divisors (47089599).

61550625 is a wasteful number, since it uses less digits than its factorization.

61550625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 61550625 is about 7845.4206388185. The cubic root of 61550625 is about 394.8306169021.

The spelling of 61550625 in words is "sixty-one million, five hundred fifty thousand, six hundred twenty-five".