1258750944 has 144 divisors (see below), whose sum is σ = 3923023104. Its totient is φ = 379680000.

The previous prime is 1258750853. The next prime is 1258750951. The reversal of 1258750944 is 4490578521.

1258750944 is a `hidden beast` number, since 1 + 25 + 87 + 509 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1258750944² = 3168907878041782272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1258750944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794377 + ... + 795959.

It is an arithmetic number, because the mean of its divisors is an integer number (27243216).

Almost surely, 2^1258750944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1258750944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961511552).

1258750944 is an abundant number, since it is smaller than the sum of its proper divisors (2664272160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1258750944 is a wasteful number, since it uses less digits than its factorization.

1258750944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 1258750944 is about 35478.8802529054. The cubic root of 1258750944 is about 1079.7252799195.

The spelling of 1258750944 in words is "one billion, two hundred fifty-eight million, seven hundred fifty thousand, nine hundred forty-four".