61486425 has 216 divisors, whose sum is σ = 155213280. Its totient is φ = 23587200.

The previous prime is 61486421. The next prime is 61486441. The reversal of 61486425 is 52468416.

61486425 is a `hidden beast` number, since 6 + 1 + 4 + 8 + 642 + 5 = 666.

It is not a de Polignac number, because 61486425 - 2² = 61486421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61486425.

It is not an unprimeable number, because it can be changed into a prime (61486421) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 4729719 + ... + 4729731.

It is an arithmetic number, because the mean of its divisors is an integer number (718580).

Almost surely, 2^61486425 is an apocalyptic number.

61486425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61486425 is an abundant number, since it is smaller than the sum of its proper divisors (93726855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61486425 is a wasteful number, since it uses less digits than its factorization.

61486425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 39 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 61486425 is about 7841.3280125244. The cubic root of 61486425 is about 394.6932939327.

Subtracting from 61486425 its reverse (52468416), we obtain a square (9018009 = 3003²).

The spelling of 61486425 in words is "sixty-one million, four hundred eighty-six thousand, four hundred twenty-five".