1301387525 has 12 divisors (see below), whose sum is σ = 1629701124. Its totient is φ = 1030800000.

The previous prime is 1301387513. The next prime is 1301387531. The reversal of 1301387525 is 5257831031.

It can be written as a sum of positive squares in 6 ways, for example, as 919681 + 1300467844 = 959^2 + 36062^2 .

It is not a de Polignac number, because 1301387525 - 2¹⁰ = 1301386501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255176 + ... + 260225.

It is an arithmetic number, because the mean of its divisors is an integer number (135808427).

Almost surely, 2^1301387525 is an apocalyptic number.

It is an amenable number.

1301387525 is a deficient number, since it is larger than the sum of its proper divisors (328313599).

1301387525 is a wasteful number, since it uses less digits than its factorization.

1301387525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515512 (or 515507 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1301387525 is about 36074.7491328769. The cubic root of 1301387525 is about 1091.7810360011.

The spelling of 1301387525 in words is "one billion, three hundred one million, three hundred eighty-seven thousand, five hundred twenty-five".