1252023401345 has 4 divisors (see below), whose sum is σ = 1502428081620. Its totient is φ = 1001618721072.

The previous prime is 1252023401339. The next prime is 1252023401347. The reversal of 1252023401345 is 5431043202521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197483360881 + 1054540040464 = 444391^2 + 1026908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252023401345 - 2¹⁴ = 1252023384961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252023401347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125202340130 + ... + 125202340139.

It is an arithmetic number, because the mean of its divisors is an integer number (375607020405).

Almost surely, 2^{1252023401345} is an apocalyptic number.

It is an amenable number.

1252023401345 is a deficient number, since it is larger than the sum of its proper divisors (250404680275).

1252023401345 is an equidigital number, since it uses as much as digits as its factorization.

1252023401345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250404680274.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1252023401345 its reverse (5431043202521), we get a palindrome (6683066603866).

The spelling of 1252023401345 in words is "one trillion, two hundred fifty-two billion, twenty-three million, four hundred one thousand, three hundred forty-five".