61550125 has 48 divisors (see below), whose sum is σ = 96353712. Its totient is φ = 38908800.

The previous prime is 61550117. The next prime is 61550147. The reversal of 61550125 is 52105516.

It can be written as a sum of positive squares in 8 ways, for example, as 47155689 + 14394436 = 6867^2 + 3794^2 .

It is not a de Polignac number, because 61550125 - 2³ = 61550117 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61550125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79239 + ... + 80011.

It is an arithmetic number, because the mean of its divisors is an integer number (2007369).

Almost surely, 2^61550125 is an apocalyptic number.

61550125 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61550125 is a deficient number, since it is larger than the sum of its proper divisors (34803587).

61550125 is a wasteful number, since it uses less digits than its factorization.

61550125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 61550125 is about 7845.3887730309. The cubic root of 61550125 is about 394.8295477776.

The spelling of 61550125 in words is "sixty-one million, five hundred fifty thousand, one hundred twenty-five".