251464012 has 48 divisors (see below), whose sum is σ = 476098560. Its totient is φ = 115846848.

The previous prime is 251464009. The next prime is 251464013. The reversal of 251464012 is 210464152.

It is a happy number.

It is a super-3 number, since 3×251464012³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (251464013) 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, 656373 + ... + 656755.

It is an arithmetic number, because the mean of its divisors is an integer number (9918720).

Almost surely, 2^251464012 is an apocalyptic number.

It is an amenable number.

251464012 is a deficient number, since it is larger than the sum of its proper divisors (224634548).

251464012 is a wasteful number, since it uses less digits than its factorization.

251464012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 251464012 is about 15857.6168449108. The cubic root of 251464012 is about 631.1878253700.

The spelling of 251464012 in words is "two hundred fifty-one million, four hundred sixty-four thousand, twelve".