1561025334 has 32 divisors (see below), whose sum is σ = 3408998400. Its totient is φ = 472604000.

The previous prime is 1561025329. The next prime is 1561025339. The reversal of 1561025334 is 4335201651.

It is an interprime number because it is at equal distance from previous prime (1561025329) and next prime (1561025339).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561025339) by changing a digit.

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, 65692 + ... + 86240.

It is an arithmetic number, because the mean of its divisors is an integer number (106531200).

Almost surely, 2^1561025334 is an apocalyptic number.

1561025334 is an abundant number, since it is smaller than the sum of its proper divisors (1847973066).

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

1561025334 is a wasteful number, since it uses less digits than its factorization.

1561025334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21716.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1561025334 is about 39509.8131354731. The cubic root of 1561025334 is about 1160.0320378587.

Adding to 1561025334 its reverse (4335201651), we get a palindrome (5896226985).

The spelling of 1561025334 in words is "one billion, five hundred sixty-one million, twenty-five thousand, three hundred thirty-four".