1025515013 has 2 divisors, whose sum is σ = 1025515014. Its totient is φ = 1025515012.

The previous prime is 1025515003. The next prime is 1025515019. The reversal of 1025515013 is 3105155201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022848324 + 2666689 = 31982^2 + 1633^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025515013 is a prime.

It is a super-3 number, since 3×1025515013³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1025515013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025515019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512757506 + 512757507.

It is an arithmetic number, because the mean of its divisors is an integer number (512757507).

Almost surely, 2^1025515013 is an apocalyptic number.

It is an amenable number.

1025515013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025515013 is an equidigital number, since it uses as much as digits as its factorization.

1025515013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1025515013 is about 32023.6633288573. The cubic root of 1025515013 is about 1008.4336774639.

The spelling of 1025515013 in words is "one billion, twenty-five million, five hundred fifteen thousand, thirteen".