61525000442 has 32 divisors (see below), whose sum is σ = 98601494400. Its totient is φ = 28707134400.

The previous prime is 61525000421. The next prime is 61525000477. The reversal of 61525000442 is 24400052516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3176684 + ... + 3195992.

It is an arithmetic number, because the mean of its divisors is an integer number (3081296700).

Almost surely, 2^61525000442 is an apocalyptic number.

61525000442 is a deficient number, since it is larger than the sum of its proper divisors (37076493958).

61525000442 is a wasteful number, since it uses less digits than its factorization.

61525000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20582.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 61525000442 its reverse (24400052516), we get a palindrome (85925052958).

The spelling of 61525000442 in words is "sixty-one billion, five hundred twenty-five million, four hundred forty-two", and thus it is an aban number.