1025661913 has 8 divisors (see below), whose sum is σ = 1039406400. Its totient is φ = 1012009200.

The previous prime is 1025661911. The next prime is 1025661943. The reversal of 1025661913 is 3191665201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025661913 - 2¹ = 1025661911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025661911) 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 7 ways as a sum of consecutive naturals, for example, 295 + ... + 45292.

It is an arithmetic number, because the mean of its divisors is an integer number (129925800).

Almost surely, 2^1025661913 is an apocalyptic number.

It is an amenable number.

1025661913 is a deficient number, since it is larger than the sum of its proper divisors (13744487).

1025661913 is a wasteful number, since it uses less digits than its factorization.

1025661913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45887.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1025661913 is about 32025.9568631446. The cubic root of 1025661913 is about 1008.4818262258.

The spelling of 1025661913 in words is "one billion, twenty-five million, six hundred sixty-one thousand, nine hundred thirteen".