1251360242525 has 12 divisors (see below), whose sum is σ = 1589532719124. Its totient is φ = 976671408000.

The previous prime is 1251360242479. The next prime is 1251360242533. The reversal of 1251360242525 is 5252420631521.

It can be written as a sum of positive squares in 6 ways, for example, as 485269671769 + 766090570756 = 696613^2 + 875266^2 .

It is not a de Polignac number, because 1251360242525 - 2¹⁰ = 1251360241501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610418606 + ... + 610420655.

It is an arithmetic number, because the mean of its divisors is an integer number (132461059927).

Almost surely, 2^{1251360242525} is an apocalyptic number.

It is an amenable number.

1251360242525 is a deficient number, since it is larger than the sum of its proper divisors (338172476599).

1251360242525 is a wasteful number, since it uses less digits than its factorization.

1251360242525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220839312 (or 1220839307 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 1251360242525 in words is "one trillion, two hundred fifty-one billion, three hundred sixty million, two hundred forty-two thousand, five hundred twenty-five".