1251252355 has 16 divisors (see below), whose sum is σ = 1534482144. Its totient is φ = 979130880.

The previous prime is 1251252281. The next prime is 1251252397. The reversal of 1251252355 is 5532521521.

It is not a de Polignac number, because 1251252355 - 2⁹ = 1251251843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82300 + ... + 96310.

It is an arithmetic number, because the mean of its divisors is an integer number (95905134).

Almost surely, 2^1251252355 is an apocalyptic number.

1251252355 is a deficient number, since it is larger than the sum of its proper divisors (283229789).

1251252355 is a wasteful number, since it uses less digits than its factorization.

1251252355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14406.

The product of its digits is 15000, while the sum is 31.

The square root of 1251252355 is about 35373.0455997218. The cubic root of 1251252355 is about 1077.5769738814.

Adding to 1251252355 its reverse (5532521521), we get a palindrome (6783773876).

The spelling of 1251252355 in words is "one billion, two hundred fifty-one million, two hundred fifty-two thousand, three hundred fifty-five".