1252423515051 has 64 divisors (see below), whose sum is σ = 1909269964800. Its totient is φ = 810954208512.

The previous prime is 1252423515047. The next prime is 1252423515053. The reversal of 1252423515051 is 1505153242521.

1252423515051 is a `hidden beast` number, since 1 + 2 + 52 + 42 + 3 + 515 + 0 + 51 = 666.

It is not a de Polignac number, because 1252423515051 - 2² = 1252423515047 is a prime.

It is a super-2 number, since 2×1252423515051² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1252423514997 and 1252423515015.

It is not an unprimeable number, because it can be changed into a prime (1252423515053) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 253370686 + ... + 253375628.

It is an arithmetic number, because the mean of its divisors is an integer number (29832343200).

Almost surely, 2^{1252423515051} is an apocalyptic number.

1252423515051 is a deficient number, since it is larger than the sum of its proper divisors (656846449749).

1252423515051 is a wasteful number, since it uses less digits than its factorization.

1252423515051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6177 (or 6171 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 1252423515051 its reverse (1505153242521), we get a palindrome (2757576757572).

The spelling of 1252423515051 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-three million, five hundred fifteen thousand, fifty-one".