1025173013 has 4 divisors (see below), whose sum is σ = 1034578380. Its totient is φ = 1015767648.

The previous prime is 1025173003. The next prime is 1025173021. The reversal of 1025173013 is 3103715201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 914881009 + 110292004 = 30247^2 + 10502^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025173013 - 2¹⁰ = 1025171989 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 1025173013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025173003) 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, 4702520 + ... + 4702737.

It is an arithmetic number, because the mean of its divisors is an integer number (258644595).

Almost surely, 2^1025173013 is an apocalyptic number.

It is an amenable number.

1025173013 is a deficient number, since it is larger than the sum of its proper divisors (9405367).

1025173013 is an equidigital number, since it uses as much as digits as its factorization.

1025173013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9405366.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 1025173013 is about 32018.3230822603. The cubic root of 1025173013 is about 1008.3215638238.

Adding to 1025173013 its reverse (3103715201), we get a palindrome (4128888214).

The spelling of 1025173013 in words is "one billion, twenty-five million, one hundred seventy-three thousand, thirteen".