1252651387587 has 8 divisors (see below), whose sum is σ = 1724079329280. Its totient is φ = 808162185480.

The previous prime is 1252651387567. The next prime is 1252651387621. The reversal of 1252651387587 is 7857831562521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252651387587 - 2⁶ = 1252651387523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1252651387587.

It is not an unprimeable number, because it can be changed into a prime (1252651387567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6734684787 + ... + 6734684972.

It is an arithmetic number, because the mean of its divisors is an integer number (215509916160).

Almost surely, 2^{1252651387587} is an apocalyptic number.

1252651387587 is a deficient number, since it is larger than the sum of its proper divisors (471427941693).

1252651387587 is a wasteful number, since it uses less digits than its factorization.

1252651387587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469369793.

The product of its digits is 28224000, while the sum is 60.

The spelling of 1252651387587 in words is "one trillion, two hundred fifty-two billion, six hundred fifty-one million, three hundred eighty-seven thousand, five hundred eighty-seven".