1252415105145 has 32 divisors (see below), whose sum is σ = 2231050515840. Its totient is φ = 666594290880.

The previous prime is 1252415105143. The next prime is 1252415105171. The reversal of 1252415105145 is 5415015142521.

1252415105145 is a `hidden beast` number, since 1 + 2 + 52 + 4 + 1 + 510 + 51 + 45 = 666.

It is not a de Polignac number, because 1252415105145 - 2¹ = 1252415105143 is a prime.

It is a super-2 number, since 2×1252415105145² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252415105143) 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, 9380914 + ... + 9513483.

It is an arithmetic number, because the mean of its divisors is an integer number (69720328620).

Almost surely, 2^{1252415105145} is an apocalyptic number.

1252415105145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252415105145 is a deficient number, since it is larger than the sum of its proper divisors (978635410695).

1252415105145 is a wasteful number, since it uses less digits than its factorization.

1252415105145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18894902 (or 18894896 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

The spelling of 1252415105145 in words is "one trillion, two hundred fifty-two billion, four hundred fifteen million, one hundred five thousand, one hundred forty-five".