1252435240545 has 32 divisors (see below), whose sum is σ = 2008779125760. Its totient is φ = 666338370240.

The previous prime is 1252435240517. The next prime is 1252435240547. The reversal of 1252435240545 is 5450425342521.

It is not a de Polignac number, because 1252435240545 - 2¹³ = 1252435232353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1252435240497 and 1252435240506.

It is not an unprimeable number, because it can be changed into a prime (1252435240547) 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, 59326882 + ... + 59347988.

It is an arithmetic number, because the mean of its divisors is an integer number (62774347680).

Almost surely, 2^{1252435240545} is an apocalyptic number.

1252435240545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252435240545 is a deficient number, since it is larger than the sum of its proper divisors (756343885215).

1252435240545 is a wasteful number, since it uses less digits than its factorization.

1252435240545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30565.

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 1252435240545 in words is "one trillion, two hundred fifty-two billion, four hundred thirty-five million, two hundred forty thousand, five hundred forty-five".