1251425552105 has 32 divisors (see below), whose sum is σ = 1577728851840. Its totient is φ = 951557967360.

The previous prime is 1251425552087. The next prime is 1251425552123. The reversal of 1251425552105 is 5012555241521.

It is an interprime number because it is at equal distance from previous prime (1251425552087) and next prime (1251425552123).

It is not a de Polignac number, because 1251425552105 - 2¹⁴ = 1251425535721 is a prime.

It is a super-2 number, since 2×1251425552105² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14831597 + ... + 14915733.

It is an arithmetic number, because the mean of its divisors is an integer number (49304026620).

Almost surely, 2^{1251425552105} is an apocalyptic number.

It is an amenable number.

1251425552105 is a deficient number, since it is larger than the sum of its proper divisors (326303299735).

1251425552105 is a wasteful number, since it uses less digits than its factorization.

1251425552105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85769.

The product of its (nonzero) digits is 100000, while the sum is 38.

The spelling of 1251425552105 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five hundred fifty-two thousand, one hundred five".