61425988 has 12 divisors (see below), whose sum is σ = 115764460. Its totient is φ = 28350432.

The previous prime is 61425983. The next prime is 61425989. The reversal of 61425988 is 88952416.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2566404 + 58859584 = 1602^2 + 7672^2 .

It is a super-2 number, since 2×61425988² = 7546304003552288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61425983) 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 3 ways as a sum of consecutive naturals, for example, 590583 + ... + 590686.

Almost surely, 2^61425988 is an apocalyptic number.

It is an amenable number.

61425988 is a deficient number, since it is larger than the sum of its proper divisors (54338472).

61425988 is a wasteful number, since it uses less digits than its factorization.

61425988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181286 (or 1181284 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 61425988 is about 7837.4733173389. The cubic root of 61425988 is about 394.5639325952.

The spelling of 61425988 in words is "sixty-one million, four hundred twenty-five thousand, nine hundred eighty-eight".