1252125525615 has 16 divisors (see below), whose sum is σ = 2006997624288. Its totient is φ = 666601352576.

The previous prime is 1252125525613. The next prime is 1252125525619. The reversal of 1252125525615 is 5165255212521.

It is a cyclic number.

It is not a de Polignac number, because 1252125525615 - 2¹ = 1252125525613 is a prime.

It is a super-2 number, since 2×1252125525615² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252125525613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74924352 + ... + 74941061.

It is an arithmetic number, because the mean of its divisors is an integer number (125437351518).

Almost surely, 2^{1252125525615} is an apocalyptic number.

1252125525615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1252125525615 is a deficient number, since it is larger than the sum of its proper divisors (754872098673).

1252125525615 is a wasteful number, since it uses less digits than its factorization.

1252125525615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149865978.

The product of its digits is 300000, while the sum is 42.

The spelling of 1252125525615 in words is "one trillion, two hundred fifty-two billion, one hundred twenty-five million, five hundred twenty-five thousand, six hundred fifteen".