1245541501253 has 16 divisors (see below), whose sum is σ = 1429802544000. Its totient is φ = 1062862817472.

The previous prime is 1245541501247. The next prime is 1245541501301. The reversal of 1245541501253 is 3521051455421.

It is a cyclic number.

It is not a de Polignac number, because 1245541501253 - 2¹² = 1245541497157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245541501223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30226418 + ... + 30267596.

It is an arithmetic number, because the mean of its divisors is an integer number (89362659000).

Almost surely, 2^{1245541501253} is an apocalyptic number.

It is an amenable number.

1245541501253 is a deficient number, since it is larger than the sum of its proper divisors (184261042747).

1245541501253 is a wasteful number, since it uses less digits than its factorization.

1245541501253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60284.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 1245541501253 its reverse (3521051455421), we get a palindrome (4766592956674).

The spelling of 1245541501253 in words is "one trillion, two hundred forty-five billion, five hundred forty-one million, five hundred one thousand, two hundred fifty-three".