1315501025 has 6 divisors (see below), whose sum is σ = 1631221302. Its totient is φ = 1052400800.

The previous prime is 1315501013. The next prime is 1315501037. The reversal of 1315501025 is 5201055131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1315501013) and next prime (1315501037).

It can be written as a sum of positive squares in 3 ways, for example, as 11135569 + 1304365456 = 3337^2 + 36116^2 .

It is not a de Polignac number, because 1315501025 - 2¹² = 1315496929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 26309996 + ... + 26310045.

It is an arithmetic number, because the mean of its divisors is an integer number (271870217).

Almost surely, 2^1315501025 is an apocalyptic number.

It is an amenable number.

1315501025 is a deficient number, since it is larger than the sum of its proper divisors (315720277).

1315501025 is an equidigital number, since it uses as much as digits as its factorization.

1315501025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52620051 (or 52620046 counting only the distinct ones).

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

The square root of 1315501025 is about 36269.8362968459. The cubic root of 1315501025 is about 1095.7136289060.

Adding to 1315501025 its reverse (5201055131), we get a palindrome (6516556156).

The spelling of 1315501025 in words is "one billion, three hundred fifteen million, five hundred one thousand, twenty-five".