1513256025 has 24 divisors (see below), whose sum is σ = 2510000064. Its totient is φ = 804462400.

The previous prime is 1513256023. The next prime is 1513256027. The reversal of 1513256025 is 5206523151.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1513256023) and next prime (1513256027).

It is not a de Polignac number, because 1513256025 - 2¹ = 1513256023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1513255983 and 1513256001.

It is not an unprimeable number, because it can be changed into a prime (1513256023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9114 + ... + 55763.

It is an arithmetic number, because the mean of its divisors is an integer number (104583336).

Almost surely, 2^1513256025 is an apocalyptic number.

1513256025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1513256025 is a deficient number, since it is larger than the sum of its proper divisors (996744039).

1513256025 is a wasteful number, since it uses less digits than its factorization.

1513256025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65201 (or 65196 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1513256025 is about 38900.5915764786. The cubic root of 1513256025 is about 1148.0764377570.

Adding to 1513256025 its reverse (5206523151), we get a palindrome (6719779176).

The spelling of 1513256025 in words is "one billion, five hundred thirteen million, two hundred fifty-six thousand, twenty-five".