1251425552055 has 32 divisors (see below), whose sum is σ = 2288371737600. Its totient is φ = 572067570432.

The previous prime is 1251425552009. The next prime is 1251425552059. The reversal of 1251425552055 is 5502555241521.

It is not a de Polignac number, because 1251425552055 - 2⁹ = 1251425551543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251425551998 and 1251425552016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251425552059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5957251 + ... + 6163739.

It is an arithmetic number, because the mean of its divisors is an integer number (71511616800).

Almost surely, 2^{1251425552055} is an apocalyptic number.

1251425552055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1251425552055 is a deficient number, since it is larger than the sum of its proper divisors (1036946185545).

1251425552055 is a wasteful number, since it uses less digits than its factorization.

1251425552055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264223.

The product of its (nonzero) digits is 500000, while the sum is 42.

The spelling of 1251425552055 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five hundred fifty-two thousand, fifty-five".