78250250 has 32 divisors (see below), whose sum is σ = 157759056. Its totient is φ = 28891200.

The previous prime is 78250247. The next prime is 78250261. The reversal of 78250250 is 5205287.

It can be written as a sum of positive squares in 8 ways, for example, as 4959529 + 73290721 = 2227^2 + 8561^2 .

It is a super-2 number, since 2×78250250² = 12246203250125000, which contains 22 as substring.

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, 8789 + ... + 15288.

Almost surely, 2^78250250 is an apocalyptic number.

78250250 is an abundant number, since it is smaller than the sum of its proper divisors (79508806).

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

78250250 is a wasteful number, since it uses less digits than its factorization.

78250250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24107 (or 24097 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 78250250 is about 8845.9171373013. The cubic root of 78250250 is about 427.7223174791.

The spelling of 78250250 in words is "seventy-eight million, two hundred fifty thousand, two hundred fifty".