1251541252 has 24 divisors (see below), whose sum is σ = 2371041792. Its totient is φ = 574605600.

The previous prime is 1251541231. The next prime is 1251541261. The reversal of 1251541252 is 2521451521.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1251541252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53074 + ... + 72937.

It is an arithmetic number, because the mean of its divisors is an integer number (98793408).

Almost surely, 2^1251541252 is an apocalyptic number.

It is an amenable number.

1251541252 is a deficient number, since it is larger than the sum of its proper divisors (1119500540).

1251541252 is a wasteful number, since it uses less digits than its factorization.

1251541252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126219 (or 126217 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 1251541252 is about 35377.1289394716. The cubic root of 1251541252 is about 1077.6599000787.

Adding to 1251541252 its reverse (2521451521), we get a palindrome (3772992773).

The spelling of 1251541252 in words is "one billion, two hundred fifty-one million, five hundred forty-one thousand, two hundred fifty-two".