1025148961 has 4 divisors (see below), whose sum is σ = 1025841712. Its totient is φ = 1024456212.

The previous prime is 1025148959. The next prime is 1025148983. The reversal of 1025148961 is 1698415201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025148961 - 2¹ = 1025148959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025148961.

It is not an unprimeable number, because it can be changed into a prime (1025148991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344151 + ... + 347116.

It is an arithmetic number, because the mean of its divisors is an integer number (256460428).

Almost surely, 2^1025148961 is an apocalyptic number.

It is an amenable number.

1025148961 is a deficient number, since it is larger than the sum of its proper divisors (692751).

1025148961 is an equidigital number, since it uses as much as digits as its factorization.

1025148961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692750.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1025148961 is about 32017.9474826229. The cubic root of 1025148961 is about 1008.3136782150.

The spelling of 1025148961 in words is "one billion, twenty-five million, one hundred forty-eight thousand, nine hundred sixty-one".